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Broomfield
Illustrated Checklist
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Native and Naturalized (287)
Exotic: Escapee (5)
Hybrids (13)
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiLast observed by Jack Bushong on 29 Dec 2018
- Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsiiLast observed by David Ely on 4 Feb 2023
- Ross's x Cackling Goose (hybrid) Anser rossii x Branta hutchinsiiLast observed by David Ely on 20 Nov 2021
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Chipper Phillips on 27 Apr 2019
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisLast observed by Chipper Phillips on 6 Feb 2020
- Snow/Ross's x Cackling/Canada Goose (hybrid) Anser caerulescens/rossii x Branta hutchinsii/canadensisLast observed by Jason Cole on 14 Jan 2024
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosLast observed by Jason Cole on 2 Apr 2023
- American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchosLast observed by Jack Bushong on 21 Nov 2016
- Redhead x Ring-necked Duck (hybrid) Aythya americana x collarisLast observed by Bill Schmoker on 27 Dec 2012
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by Eric DeFonso 🦑 on 1 Apr 2023
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Bill Schmoker on 20 Feb 2012
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Bill Schmoker on 20 Feb 2012
- Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeliLast observed by Mackenzie Goldthwait on 17 Feb 2021
Additional Taxa (87)
- Eurasian/American Wigeon Mareca penelope/americanaLast observed by Kim Kennedy White on 24 Mar 2022
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Chipper Phillips on 21 Aug 2022
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Chipper Phillips on 25 Sep 2021
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Jason Cole on 30 Sep 2021
- Double-crested/Neotropic Cormorant Nannopterum auritum/brasilianumLast observed by Jason Cole on 10 Sep 2023
- Yellow-crowned/Black-crowned Night Heron Nycticorax nycticorax/Nyctanassa violaceaLast observed by Karen Freundlich on 14 May 2023
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Chris Petrizzo on 1 Apr 2024
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalusLast observed by Jason Cole on 27 Jan 2024
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by Anonymous eBirder on 6 Jan 2022
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by David Ely on 11 May 2023
- Gray/Dusky Flycatcher Empidonax wrightii/oberholseriLast observed by Chipper Phillips on 8 May 2021
- Black-capped/Mountain Chickadee Poecile atricapillus/gambeliLast observed by Bonnie Seidle on 16 Feb 2024
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Jason Cole on 5 Jan 2024
- Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmusLast observed by Marsha Allen on 14 Feb 2021
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Jason Cole on 9 Sep 2023