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Jefferson
Illustrated Checklist
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Native and Naturalized (334)
Exotic: Escapee (4)
Hybrids (5)
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraLast observed by Darren Clark on 7 May 2022
- Black-chinned x Calliope Hummingbird (hybrid) Archilochus alexandri x Selasphorus calliopeLast observed by Austin Young on 22 May 2023
- Glossy x White-faced Ibis (hybrid) Plegadis falcinellus x chihiLast observed by Darren Clark on 27 Apr 2019
- Townsend's x Hermit Warbler (hybrid) Setophaga townsendi x occidentalisLast observed by Jay Carlisle on 12 May 2012
- Rose-breasted x Black-headed Grosbeak (hybrid) Pheucticus ludovicianus x melanocephalusLast observed by Hilary Turner on 19 May 2018
Additional Taxa (56)
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorLast observed by Alex Schiwal on 17 Feb 2023
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiLast observed by Harrison Hepding on 26 Jun 2023
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Hilary Turner on 20 Aug 2021
- white-winged gull sp. Larus sp. (white-winged gull sp.)Last observed by Austin Young on 17 Apr 2023
- MacGillivray's/Mourning Warbler Geothlypis tolmiei/philadelphiaLast observed by Noel Zaugg on 30 May 2011
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalusLast observed by logan kahle on 23 Aug 2019