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Rocky Mountain NP--Upper Beaver Meadows
Illustrated Checklist
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Native and Naturalized (177)
Hybrids (1)
- Townsend's x Black-throated Green Warbler (hybrid) Setophaga townsendi x virensLast observed by Carl Bendorf on 20 Sep 2021
Additional Taxa (52)
- Ruby-throated/Black-chinned Hummingbird Archilochus colubris/alexandriLast observed by Nick O on 23 May 2018
- Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalisLast observed by Brian Southwick on 22 May 2023
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseriLast observed by Max Rollfinke on 9 Aug 2023
- Black-capped/Mountain Chickadee Poecile atricapillus/gambeliLast observed by Sean Caufield on 11 Nov 2023
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by Roberto San Antonio on 30 Jun 2023
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Tom Murphy on 27 Jun 2017
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Sam Krerowicz on 27 Jun 2014