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Sand Bluff Bird Observatory
Illustrated Checklist
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Native and Naturalized (219)
Hybrids (4)
- Spotted x Eastern Towhee (hybrid) Pipilo maculatus x erythrophthalmusLast observed by Cindy Brown on 8 Oct 2017
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by John Longhenry on 24 Aug 2013
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by John Longhenry on 15 May 2021
- Rose-breasted x Black-headed Grosbeak (hybrid) Pheucticus ludovicianus x melanocephalusLast observed by John Longhenry on 20 Aug 1983
Additional Taxa (4)
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by John Longhenry on 28 Sep 2023
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by John Longhenry on 5 Sep 2019