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Big Horn
Illustrated Checklist
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Native and Naturalized (261)
Exotic: Escapee (2)
Hybrids (4)
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Kevin Glueckert on 9 Dec 2017
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by William Crain on 15 Jan 2017
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Mike Weber on 26 Feb 2023
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusLast observed by Tina Toth on 7 Dec 2019
Additional Taxa (40)
- Common/Barrow's Goldeneye Bucephala clangula/islandicaLast observed by Kevin Glueckert on 9 Dec 2017
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Tisa Hunnewell on 10 Oct 2019
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Last observed by Brian Tsuru on 30 Jul 2019
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Kevin Glueckert on 30 Sep 2017
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Guy Tingos on 22 May 2019
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Mike Holaday on 27 Aug 2018