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Custer
Illustrated Checklist
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Native and Naturalized (256)
Exotic: Escapee (3)
Hybrids (2)
- Bullock's x Baltimore Oriole (hybrid) Icterus bullockii x galbulaLast observed by Auna Kaufmann-Schwartz on 16 May 2019
- Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyaneaLast observed by Hannah Criswell on 2 Aug 2023
Additional Taxa (47)
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Isabella Carlson on 18 Jul 2022
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Max Rollfinke on 11 Aug 2023
- Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalisLast observed by Jonathon Jongsma on 21 Jun 2012
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by Anonymous eBirder on 26 Jan 2024
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Heidi Ware Carlisle on 22 May 2021
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by linda fritschel on 18 Aug 2022
- Tree/Violet-green Swallow Tachycineta bicolor/thalassinaLast observed by David de Rivera Tønnessen on 16 May 2019
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by Kate Najacht on 5 May 2020