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Cornell Research Ponds Unit II (restricted access)
Illustrated Checklist
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Native and Naturalized (210)
Hybrids (1)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Marshall Iliff on 10 Sep 2014
Additional Taxa (29)
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Jay McGowan on 13 Aug 2021
- Spizella sp./American Tree Sparrow Spizella/Spizelloides sp.Last observed by Jay McGowan on 4 Nov 2015
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by Jay McGowan on 19 Sep 2018