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Rare bird documentation form for Trumpeter Swan at Big Marsh, 1997
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Field notes Forms (documents)
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Birds--Identification Ornithology Rare birds
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1997-03-22
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1997-04-06
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Rare birds documentation form
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Rare bird documentation form for two Trumpeter Swans at Big Marsh in Butler County, IA on March 22, 1997.
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Proescholdt, Mark
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Trumpeter Swan
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Big Marsh Wildlife Area
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Big marsh - (Butler County)
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Huge marshy area
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The documentation form by Mark Proescholdt is the only one submitted and forms the basis of this record. Other observers include Beth Proescholdt and Steve Dinsmore. | Elimination of similar species: A Tundra Swan immature is much whiter by late winter than immature trumpeters. Tundra Swans have slightly concave bills and the black of the bills do not go completely to the eye in a triangle. | The original documentation form event lasted from 16:30:00/16:45:00.
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Iowa Ornithologists' Union | MS 166
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32
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30
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Rare bird documentation form for Trumpeter Swan at Mississippi River in Davenport, 1998
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Field notes Forms (documents)
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Birds--Identification Ornithology Rare birds
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1998-12-23
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1998-12-30
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Rare birds documentation form
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Rare bird documentation form for a Trumpeter Swan at Mississippi River near Enchanted Island in Davenport in Scott County, IA on December 23, 1998.
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McKay, Kelly
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Trumpeter Swan
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Horse Island
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~0.25 mile downstream of Enchanted Island, Davenport (Scott Co.)
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Mississippi River side channel. Surrounding habitat consists of a backwater slough and a developed shoreline.
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The documentation form by Kelly J. McKay is the only one submitted and forms the basis of this record. | Elimination of similar species: Tundra Swan - Smaller, more of an angle between bill and forehead. Snow Goose - Smaller, pink bill, black primaries. American White Pelican -'pouched' bill, black primaries and secondaries. | The original documentation form event lasted from 12:30:00/12:45:00.
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Iowa Ornithologists' Union | MS 166
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32
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30
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