| UID | 
				 | 
			
			
				| Digital Object Type | 
				Rare birds documentation form | 
			
			
				| Content DM Link | 
				https://n2t.net/ark:/87292/w9s17sv1n | 
			
			
				| Type | 
				Text | 
			
			
				| Description | 
				Rare bird documentation form for a Black-crowned Night Heron at Saylorville Reservoir in Polk County, IA on November 2, 1986. | 
			
			
				| Related Genres | 
				
					 Field notes				 | 
			
			
				| Sort Date | 
				
					1986-11-02 - 1986-11-16				 | 
			
			
				| People / Organizations | 
				 | 
			
			
				| Time | 
				9:15 AM | 
			
			
				| Rights | 
				This Item is protected by copyright and/or related rights. However, for this Item, either (a) no rights-holder(s) have been identified or (b) one or more rights-holder(s) have been identified but none have been located. If you have any information that can contribute to identifying or locating the rights-holder(s) please notify the Iowa State University Library Digital Initiatives Program (digital@iastate.edu). (Rightsstatements.org InC-RUU 1.0). The original object is available at the Iowa State University Library Special Collections and University Archives (archives@iastate.edu). | 
			
							
					| Data Access Rights | 
					http://vertnet.org/resources/norms.html | 
				
				
					| Data License | 
					http://creativecommons.org/publicdomain/zero/1.0 | 
				
						
				| Collection | 
				 Iowa Ornithologists' Union | MS 166 | 
			
			
				| Box | 
				 32 | 
			
			
				| Folder | 
				 22 | 
			
			
				| Contributing Institution | 
				Iowa State University Library Special Collections and University Archives | 
			
			
				| Creator / Author | 
				 Dinsmore, Stephen J. | 
			
			
				| Contributors | 
				 | 
			
			
				| Topics | 
				
					 Birds--Identification Ornithology Rare birds				 | 
			
			
				| Birds | 
				
					 Black-crowned Night Heron				 | 
			
			
				| Locations | 
				
					 Saylorville Lake				 | 
			
			
				| Map | 
				
					 
 
				 | 
			
							
					| Verbatim Locality | 
					Saylorville Reservoir, Polk Co. (ponds below dam) | 
				
				
					| Location Remarks | 
					The documentation forms do not include georeferences | 
				
				
					| Habitat | 
					sitting in a willow along a pond | 
				
						
				| Extent | 
				1 page | 
			
			
				| Language(s) | 
				eng | 
			
			
				| Bibliographic Citation | 
				 | 
			
							
					| Information Withheld | 
					 | 
				
				
					| Individual Count | 
					1 | 
				
				
					| Occurrence Remarks | 
					The documentation form by Steve Dinsmore is the only one submitted and forms the basis of this record. | Elimination of similar species: Yellow-crowned Night Heron was eliminated by the yellowish bill color and the streaking, not spotting, on the underparts. American Bittern was eliminated by size, bill shape, and lack of a black whisker mark. | The original documentation form event lasted from 09:15:00/09:20:00. | 
				
				
					| Occurrence Status | 
					present | 
				
				
					| Field Number | 
					 | 
				
				
					| Event Remarks | 
					Viewing Conditions: Viewing conditions were excellent with the sun behind me and the sky mostly clear. Estimated viewing distance was 50-60 yards. I used a Buschnell 20-45x spotting scope. | 
				
				
					| Supporting Documentation | 
					 | 
				
									
				| Date Digital | 
				20 Nov 2017 | 
			
						
				| File Type | 
				image/jpeg | 
			
			
				| Hardware / Software | 
				Epson - sheet feed |