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Beltzville SP
Illustrated Checklist
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Native and Naturalized (262)
Exotic: Escapee (4)
Hybrids (4)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Rich Rehrig on 29 Jan 2024
- Carolina x Black-capped Chickadee (hybrid) Poecile carolinensis x atricapillusLast observed by Ty Sharrow on 14 Aug 2019
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Rich Rehrig on 20 May 2009
- Lawrence's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F2 backcross)Last observed by Rich Rehrig on 20 May 2009
Additional Taxa (32)
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Dan Altif on 30 Oct 2012
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by michael cox on 31 Aug 2023
- Carolina/Black-capped Chickadee Poecile carolinensis/atricapillusLast observed by Rob Bergstresser on 5 Apr 2023