|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at IPL Ponds, 1985
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1985-05-17
|
1993-09-03
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at IPL Ponds in Pottawattamie County, IA on May 17, 1985. Includes a record review document with votes, correspondence about the bird sighting, a summary of review, and a documentation form submitted to the committee.
|
Wright, Rick
|
Lesser Black-backed Gull
|
MidAmerican Energy Ponds
|
IPPD Settling Ponds, Pottawatamie [sic] Co., Iowa
|
|
The documentation form by Rick Wright is the only one submitted and forms the basis of this record. Other observers include Ken Strom and Marie Strom. | Elimination of similar species: [...] The different mantle colorations of the herring and ring-billed gulls were distinguishable. [...] The presence of other gull species convinced me that I had accurately judged the mantle color of this bird; I was able to compare it with 3 other species, as well as Caspian terns. The size and bill size rule out great Black-backed, the only dark-backed gull with which I am familiar. Although western gull would show a similar upper-wing pattern, I suspect that it too would appear heavy-billed (and would not have yellow feet). Yellow-footed gull is also large and deep-billed, and is probably less likely than lesser black-backed in Iowa. | The original documentation form event occurred around 13:30:00/13:30:30.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Lock and Dam 19 in Keokuk, 1986
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-10-20
|
1993-09-07
|
Rare birds documentation form
|
Records Committee for a Lesser Black-backed Gull at Lock and Dam 19 in Keokuk in Lee County, IA on October 20, 1986. Includes a record review document with votes, an article in Iowa Bird Life, summary of the review, and two documentation forms submitted to the committee.
|
Cecil, Robert I.
|
Lesser Black-backed Gull
|
Lock Number 19
|
Behind dam, Lock and Dam 19, Keokuk, Iowa
|
River rapids
|
The documentation form by Robert Cecil forms the basis of this record. Another documentation form by Jim Fuller was submitted. Other observers include Chris Pilliod, Jim Sandrock, Cal Knight, Jane Fuller, Charles Fuller, and James Huntington. | Elimination of similar species: The only species I could not eliminate on the basis of field marks observed was Yellow-footed, which according to Tom Kent (telephone conversation) is not a known vagrant. More objectively, the Yellow-footed is supposed to be larger than a Herring Gull. As stated above, this bird was about the size of a Herring Gull, or perhaps a little smaller. I don't feel it was larger than a Herring Gull. Seabirds (Harrison) warns of possible confusion with dark race Herring Gull. I have not heard of this race occuring [sic] in Iowa. In any event, the foot coloring was incorrect for Herring Gull, which has pink legs in contrast to this bird's yellow legs. | The original documentation form event occurred at various times.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Saylorville Dam, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-11-29
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Saylorville Dam in Polk County, IA on November 29, 1986. Includes a record review document with votes, a summary of review, and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Saylorville Dam
|
Saylorville Reservoir, Polk Co.
|
sitting on ice above dam
|
The documentation form by Steve Dinsmore forms the basis of this record. Other documentation forms by Tanya Bray and Barbara Wilson were submitted. Other observers include Peter Wickham, Mark Brogie, and Bery Engebretsen. | Elimination of similar species: Great Black-backed Gull was eliminated by the smaller size, contrast between the wingtips and the rest of the wing, and by the heavy streaking on the head(head should be mostly white on a Great Black-backed Gull). California Gull was eliminated by the darker mantle, darker underwing and dark carpal bar, lack of a dark spot on the bill, and by the dark smudge at the base of the bill(this is characteristic of 3rd summer Lesser Black-backed Gulls and is never present on California Gulls). | The original documentation form event lasted from 10:08:00/12:10:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Elk Rock State Park, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-12-03
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Elk Rock State Park in Marion County, IA on December 3, 1986. Includes a record review document with votes and a documentation form submitted to the committee.
|
Petersen, Peter C.
|
Lesser Black-backed Gull
|
Elk Rock State Park
|
[...] resting on mud bar just w. of old Hwy 14 a long north edge of reservoir.
|
|
The documentation form by Peter C. Petersen is the only one submitted and forms the basis of this record. Gil Sandvick was another observer. | Elimination of similar species: [...] Bird slightly smaller than nearby adult Herring Gull, larger than Ring-billed Gulls surrounding it. head white with tan flecking back + mantle slaty grey, much darker than Herring Gull. | The original documentation form event lasted from 14:45:00/14:50:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Elk Rock State Park, 1986
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1986-12-11
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Elk Rock State Park in Marion County, IA on December 11, 1986. Includes a record review document with votes, a summary of the review, and a documentation form submitted to the committee.
|
Fuller, James L
|
Lesser Black-backed Gull
|
Elk Rock State Park
|
on ice in Lake Red Rock as viewed from bluff in N. Elk Rock St. Park
|
Reservoir on ice
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: Great Black Backed - size other dark immature gulls - wings - more solid + consistent color + mantle solid dark gray | The original documentation form event lasted from 14:40:00/15:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull on the Iowa River in Iowa City, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-01-31
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review of Lesser Black-backed Gull on the Iowa River in Iowa City in Johnson County, IA on January 31, 1987. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Fuller, James L
|
Lesser Black-backed Gull
|
Iowa City
|
Iowa River - Iowa City
|
River
|
The documentation form by Jim Fuller forms the basis of this record. Another documentation form by Carl J. Bendorf was submitted. Another observer includes Cal Knight. | Elimination of similar species: I question bill color. Wings + mantle not dark enough for great black backed + too dark for California Gull. | The original documentation form event lasted from 09:55:00/10:00:00, 10:10:00/10:15:00, and 13:35:00/13:45:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull near the Ben Butterworth Parkway, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-02-04
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull near the Ben Butterworth Parkway in Rock Island County, IL on February 4, 1987. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Fuller, Charles R.
|
Lesser Black-backed Gull
|
Ben Butterworth Parkway
|
seen from Riverside Park Moline (Bettendorf IA)
|
River
|
The documentation form by Chuck Fuller is the earliest and the one that forms the basis of this record. Another documentation form by Peter C. Petersen was submitted later. Other observers include Mary Lou Petersen, Ann Barker, Jane Fuller, Gerry White, and Tim Dwyer. | Elimination of similar species: Western - Slatybacked - Yellowlegs Greater Black Backed - size- leg color. difference in mantle color | The original documentation form event lasted from 15:30:00/16:30:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Saylorville Reservoir, 1987
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1987-12-29
|
1993-09-07
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Saylorville Reservoir in Polk County, IA on December 29, 1987. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Armstrong, Eugene
|
Lesser Black-backed Gull
|
Saylorville Lake
|
South Saylorville Overlook
|
Saylorville Ice
|
The documentation form by Eugene Armstrong is the earliest and the one that forms the basis of this record. Another documentation form by Bery Engebretsen was submitted later. Other observers include Eloise Armstrong and Gale Pederson. | Elimination of similar species: Greater Black backed gull, this gull much to [sic] small for that species | The original documentation form event lasted from 09:00:00/10:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull near Jester Park at Saylorville Reservoir, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-11-15
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull near Jester Park at Saylorville Reservoir in Polk County, IA on November 15, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Jester Park
|
Saylorville Reservoir, Polk Co.-near Jester Park
|
resting on mud bar with thousands of other gulls
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. Other observers include Bery Engebretsen. | Elimination of similar species: The size (larger than Ring-billed Gull, smaller than Herring Gull) eliminates all Gulls except Herring, California, and Lesser Black-backed gulls. The mantle was much too dark for a Herring Gull. Separation from California Gull is much more difficult. Obviously, the mantle color of this bird was much too dark for a California Gull, and the legs were more yellow than the legs of a California Gull. | The original documentation form event lasted from 15:44:00/16:38:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Jester Park at Saylorville Reservoir, 1988
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1988-12-04
|
1993-08-04
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Jester Park at Saylorville Reservoir in Polk County, IA on December 4, 1988. Includes a record review document with votes and a documentation form submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Jester Park
|
Saylorville Reservoir, Polk Co.-near Jester Park
|
resting on mud bar with thousands of other gulls
|
The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The size(larger than Ring-billed Gull, smaller than Herring Gull) eliminates all Gulls except Herring, California, and Lesser Black-backed gulls. Dark mantle color eliminates Herring Gull. The dark gray mantle was too dark for a California Gull, and the legs were a brighter yellow than the dull yellow leg color of a California. | The original documentation form event lasted from 14:50:00/15:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Sandpiper Beach at Saylorville Reservoir, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-08-19
|
1993-08-06
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Sandpiper Beach at Saylorville Reservoir in Polk County, IA on August 19, 1989. Includes a record review document with votes and a documentation form submitted to the committee.
|
Cecil, Robert I.
|
Lesser Black-backed Gull
|
Sandpiper Recreation Area
|
Sandpiper Beach, Sailorville [sic] Reservoir, Polk County, Iowa
|
Sandy beach
|
The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. Another observer includes Bery Engebretsen. | Elimination of similar species: No other species has combination of slate gray mantle and yellow legs other than Yellow-footed, which is not a known vagrant. According to NGS, Yellow-footed is same size as Glaucous. This bird was much smaller - not a whole lot bigger than a Ring-bill. | The original documentation form event lasted from 09:00:00/09:20:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records committee review for rare bird sighting of Lesser Black-backed Gull at Red Rock Dam, 1989
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1989-10-05
|
1993-08-06
|
Rare birds documentation form
|
Records committee review for a Lesser Black-backed Gull at Red Rock Dam in Marion County, IA on October 5, 1989. Includes a record review document with votes and four documentation forms submitted to the committee.
|
Johnson, Ann
|
Lesser Black-backed Gull
|
Red Rock Dam
|
Below Red Rock Dam, near Pella, Marion Co., IA
|
River with numerous sand and gravel bars
|
The documentation form by Ann Johnson forms the basis of this record. Other documentation forms by Jim Sinclair, Raymond Cummins, and James Fuller were submitted. Other observers include Marlys Huff, David Youngblut, Pete Wickham, John Daniel, and Ken Lowder. | Elimination of similar species: Great Black-backed Gull- The bird was not large enough nor was the bill as massive. The great black-backed should also show a whiter head and lighter inner primaries and the back would be more of a checkerboard than the scaliness of this bird. Herring Gull- Because of variability, eliminating the herring was more problematic. Size was not particularly helpful initially in that this bird was near the second-year herring gull for such a brief time that I really couldn't make comparison. The variable sizes of ring-bills were of no help because next to some it looked huge and next to others it was only some larger. Some subtle differences were helpful in making this bird "look different" but I don't believe they could be considered sufficient. The checkered, scaly look was more pronounced than most juvenile herrings. The wings seemed long as they extended beyond the tail. The bill was entirely black and the tail band more distinct than most juvenile herrings. The color distinction between the head/tail and body from a distance were also helpful. The clincher, however, was during flight when no "windows" were visible on the inner primaries and the dark secondary coverts created a wide, dark trailing edge to the wing. These flight indicators, as well as size differential, were confirmed on the 23 October sighting. | The original documentation form event lasted from 15:10:00/16:00:00 and 16:15:00/16:40:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull on the Mississippi River near Bettendorf, 1990
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1990-02-17
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull on the Mississippi River near Bettendorf in Scott County, IA on February 17, 1990. Includes a record review document with votes and two documentation forms submitted to the committee.
|
Petersen, Peter C.
|
Lesser Black-backed Gull
|
Bettendorf
|
2/17- on ice over, Miss. River Channel between Moline, IL. + Bettendorf Ia. obs. in Il. 2/19 at Lock + Dam 15 from Ia. side - again in center of river.
|
Miss. River ice.
|
The documentation form by Peter C. Petersen forms the basis of this record. Another documentation form by Jim Fuller was submitted. Other observers include Jim Scheib, Ann Barker, and Walter Zuurdeeg. | Elimination of similar species: Slaty-backed Gull - legs not pink, size Great Black-backed Gull- legs not pink, size, back not dark enough Western Gull - legs not pink, size Yellow footed Gull - size | The original documentation form event lasted from 09:25:00/09:40:00 on February 17, 1990 and 09:40:00/09:45:00 on February 19, 1990.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Davenport, 1991
|
Administrative records Clippings (information artifacts) Field notes Charts (graphic documents)
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-01-16
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Davenport in Scott County, IA on January 16, 1991. Includes a record review document with votes, an article in Iowa Bird Life, comparisons of different gull sightings, and a documentation form submitted to the committee.
|
Armstrong, Eloise Armstrong, Eugene
|
Lesser Black-backed Gull
|
Davenport
|
Sand Bar, Center Mississippi river Davenport
|
River Partly Frozen
|
The documentation form by Eugene Armstrong and Eloise Armstrong is the only one submitted and forms the basis of this record. Other observers include Peter C. Petersen, Tom Kent, and James Fuller. | Elimination of similar species: Herring - slightly smaller than herring Ring billed - larger than ring billed Glaucous - much larger than bird seen Great Black Backed - much smaller than great Black Backed Bird was standing + sitting with Ring Bill on left and Herring on right | The original documentation form event lasted from 15:00:00/15:20:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at South Sabula Lakes County Park, 1991
|
Administrative records Clippings (information artifacts) Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-03-10
|
1993-07-17
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at South Sabula Lakes County Park in Jackson County, IA on March 10, 1991. Includes a record review document with votes, an article in Iowa Bird Life, and a documentation form submitted to the committee.
|
Fuller, Karole Fuller, James L
|
Lesser Black-backed Gull
|
South Sabula Lakes Park
|
South Sabula Lakes County Park, Sabula, Jackson County
|
Mississippi River backwater/harbor
|
The documentation form by Jim and Karole Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: All other adult dark mantled gulls have pink legs, except the Yellow-footed gull which is seen at the Salton Sea, and extreme southwest California. That bird has never been seen away from that area, and should be noticeably larger than a Lesser black backed gull. The European race of the Herring gull has yellow legs, and one has been seen on the east coast the past two winters. That bird should be larger, and does not have a dark mantle. | The original documentation form event lasted from 14:03:00/14:27:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Coralville Reservoir, 1991
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1991-11-28
|
1993-07-17
|
Rare birds documentation form
|
Records Committee for a Lesser Black-backed Gull at Coralville Reservoir in Johnson County, IA on November 28, 1991. Includes a record review document with votes and a documentation form submitted to the committee.
|
Kent, Thomas H. (Thomas Hugh), 1934-
|
Lesser Black-backed Gull
|
Coralville Lake
|
Coralville Reservoir, Johnson Co., IA.
|
Reservoir mostly ice-covered. Gulls around small patch of open water.
|
The documentation form by Thomas H. Kent is the only one submitted and forms the basis of this record. Jim Fuller was another observer. | Elimination of similar species: The size, wing and mantle color and yellow legs exclude other species, except perhaps for the most unlikely Yellow-footed Gull, which should be larger. | The original documentation form event lasted from 08:45:00/09:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Lake MacBride Beach, 1993
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-04-16
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Lake MacBride Beach in Johnson County, IA on April 16, 1993. Includes a record review document with votes and a documentation form submitted to the committee.
|
Fuller, James L
|
Lesser Black-backed Gull
|
Lake MacBride Beach
|
Swim Beach of Lake MacBride State Park (Johnson County).
|
|
The documentation form by Jim Fuller is the only one submitted and forms the basis of this record. | Elimination of similar species: All of the other larger gulls that are dark-mantled are larger than Lesser Black-backed. In addition, all those adult birds have pink legs, except Yellow-footed Gull, which has never been seen away from southern California and is larger than Herring Gull. | The original documentation form event lasted from 15:59:00/16:03:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at Coralville Dam, 1993
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-12-11
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Coralville Dam in Johnson County, IA on December 11, 1993. Includes a record review document with votes and three documentation forms submitted to the committee.
|
Pinkston, Randall, 1956-
|
Lesser Black-backed Gull
|
Coralville Dam
|
Coralville Reservoir dam, Johnson County, Iowa
|
|
The documentation form by Randy Pinkston is the earliest and the one that forms the basis of this record. Other documentation forms by Carl Bendorf and Jim Fuller were submitted later. Other observers include John McLure, Chris Edwards, Jonnie Ellsworth, Lanny Haldy, Randy Graesser, Dan Ray, Angela Ray, Kathleen Kuenstling, Tom Kent, and many unidentified other observers. | Elimination of similar species: Size and appearance rule out all other regular and vagrant North American gulls. | The original documentation form event lasted from 15:30:00/16:00:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Gull at the Des Moines River in Des Moines, 1993
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1993-12-21
|
1995-07-08
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at the Des Moines River in Des Moines in Polk County, IA on December 21, 1993. Includes a record review document with votes and a documentation form submitted to the committee.
|
Cecil, Robert I.
|
Lesser Black-backed Gull
|
Des Moines
|
Des Moines River, Downtown Des Moines, Polk County, Iowa
|
River
|
The documentation form by Robert Cecil is the only one submitted and forms the basis of this record. | Elimination of similar species: Most other dark mantled gulls have pink legs. Yellow-footed gull is larger in size than Herring. | The original documentation form event lasted from 16:00:00/16:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed at Red Rock Lake, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-10-29
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Red Rock Lake in Marion County, IA on October 29, 1994. Includes a record review document with votes and a documentation form submitted to the committee.
|
Armstrong, Eugene
|
Lesser Black-backed Gull
|
Lake Red Rock
|
Red Rock Lake
|
Lake
|
The documentation form by Eugene Armstrong is the only one submitted and forms the basis of this record. Other observers include Eloise Armstrong, Cal Knight, Bernie Knight, Maridel Jackson, and Barb Bettis. | Elimination of similar species: Ringbills never have a scaly pattern over the back or an all black bill. Smaller than a herring gull. Herrings only have a black bill when they are in brown juvenile plumage. 1st summer herring has a 2/3rds pink bill. | The original documentation form event lasted from 11:15:00/11:35:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed at Red Rock Reservoir Dam, 1994
|
Administrative records Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1994-12-11
|
1996-04-25
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Red Rock Reservoir Dam in Marion County, IA on December 11, 1994. Includes a record review document with votes and three documentation forms submitted to the committee.
|
Dinsmore, Stephen J.
|
Lesser Black-backed Gull
|
Red Rock Dam
|
below Red Rock Reservoir dam, Marion Co., IA
|
spillway below dam
|
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
|
|
Records Committee review for rare bird sighting of Lesser Black-backed Full at Lock 13, 1995
|
Administrative records Correspondence Field notes
|
Bird watching Ornithology Ornithology--Societies, etc
|
1995-10-22
|
2000-11-20
|
Rare birds documentation form
|
Records Committee review for a Lesser Black-backed Gull at Lock 13 in Clinton County, IA on October 22, 1995. Includes a record review document with votes and a documentation letter with field notes submitted to the committee.
|
Petersen, Peter C.
|
Lesser Black-backed Gull
|
Lock and Dam 13
|
Lock 13
|
|
The documentation letter and field notes by Peter C. Petersen forms the basis of this record. Other observers include Dan Dorrance, Kelly McKay, Mary Lou Petersen, and Dennis Carter. | The original documentation form event lasted from approximately 10:00:00/10:15:00.
|
Iowa Ornithologists' Union | MS 166
|
11
|
5
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Records Committee review for rare bird sighting of Lesser Black-backed Gull at Red Rock Dam, 1996
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1996-11-27
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2000-11-22
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Rare birds documentation form
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Records Committee review for a Lesser Black-backed Gull at Red Rock Dam in Marion County, IA on November 27, 1996. Includes a record review document with votes and a documentation form submitted to the committee.
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Dinsmore, Stephen J.
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Lesser Black-backed Gull
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Red Rock Dam
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below Red Rock dam, Marion Co., IA
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dam tailwaters
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The documentation form by Stephen J. Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: The most similar-appearing species is first-basic Herring Gull. The combination of slightly smaller size, longer wings, whiter rump, more speckled mantle, contrast between the darker mantle and lighter head, and darker upperwings lacking a pale "window" eliminated Herring Gull in first-basic plumage. | The original documentation form event lasted from 15:22:00/15:40:00.
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Iowa Ornithologists' Union | MS 166
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11
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5
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Records Committee review for rare bird sighting of Lesser Black-backed Gull at Coralville Dam, 1997
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Administrative records Field notes
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Bird watching Ornithology Ornithology--Societies, etc
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1997-10-08
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2000-11-24
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Rare birds documentation form
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Records Committee review for a Lesser Black-backed Gull at Coralville Dam in Johnson County, IA on October 8, 1997. Includes a record review document with votes and three documentation forms submitted to the committee.
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Fuller, James L
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Lesser Black-backed Gull
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Coralville Dam
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Beach at West Overlook Area just above the Coralville Reservoir Dam (Johnson County)
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The documentation form by Jim Fuller forms the basis of this record. Other documentation forms by Thomas H. Kent and Chris Edwards were submitted. Other observers include James Huntington, Jim Huntington, and Chuck Fuller. | Elimination of similar species: All other dark mantled gulls in this plumage that are possible are larger and should show pinkish legs. | The original documentation form event lasted from 17:00:00/17:30:00 on October 8, 1997, 07:05:00/07:15:00 and 16:20:00/16:30:00 on October 9, 1997, and 07:01:00/07:14:00 on October 10, 1997.
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Iowa Ornithologists' Union | MS 166
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11
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5
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Records Committee review for rare bird sighting of Slaty-Backed Gull north of Le Claire, 1989
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Administrative records Clippings (information artifacts) Correspondence Field notes Photographs
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Bird watching Ornithology Ornithology--Societies, etc
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1989-02-12
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1994-02-27
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Rare birds documentation form
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Records Committee review for a Slaty-backed Gull north of Le Claire in Scott County, IA on February 12, 1989. Includes a record review document with votes, an article in Iowa Bird Life, excerpt from Illinois Birds and Birding, correspondence and commentary relevant to bird sighting and review, two photographs, photocopy of photographs, and eleven documentation forms submitted to the committee.
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Barker, Ann M.
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Slaty-backed Gull
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Le Claire
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(1) Just north of Le Claire, Ia (2 +3) - Moline, IL. riverfront
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river; open water or up on ice shelf or seawall
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The documentation form by Ann M. Barker forms the basis of this record. Other documentation forms by Jim Fuller, Peter C. Petersen, Thomas H. Kent, Gerald White, Tanya E. Bray, Ross Silcock, Carl Bendorf, and Michael J. Baum were submitted. Other observers include Mary Lou Petersen, Cal Knight, Bernie Knight, Tom Rockwell, Lewis Blevins, Brian Blevins, Don Moeller, Walter Zuurdeeg, Daryl Tessen, Doug Rose, Alan Grenon, and many unidentified observers. | Elimination of similar species: (A) Greater black backed - Gull in question has slaty - gray saddle rather than coal black. And Gull in question is same size as Herring Gulls; Greater black-backed would be much larger. (B) Lesser black backed - Gull in question has pink legs and feet, and has much more white on primaries. (C) Western - Gull in question has considerable white on primaries, and does not show dusky trailing edge to underwing. Also has broader white trailing edge to upperwing than would the Western. (D) Herring Gull - dark race - no experience with this, but those shown in Harrison do not show as dark a saddle as Gull in question, nor as much white on primaries. | The original documentation form event lasted from 15:00:00/15:30:00 on February 12, 1989, 12:15:00/12:45:00 and 16:00:00/17:30:00 on February 14, 1989.
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Iowa Ornithologists' Union | MS 166
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11
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6
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