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Upper Lisle County Park
Illustrated Checklist
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Native and Naturalized (241)
Exotic: Escapee (2)
Hybrids (2)
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Sam Deane on 23 Mar 2024
- Blue-winged x Green-winged Teal (hybrid) Spatula discors x Anas creccaLast observed by David Nicosia on 14 May 2020
Additional Taxa (50)
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by David Nicosia on 25 Mar 2024
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by David Nicosia on 31 Mar 2024
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by David Nicosia on 28 Jul 2019
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by David Nicosia on 14 Sep 2023
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Tristan Herwood on 6 Jul 2023
- Philadelphia/Warbling Vireo Vireo philadelphicus/gilvusLast observed by David Nicosia on 21 Aug 2023
- Golden-winged/Blue-winged Warbler Vermivora chrysoptera/cyanopteraLast observed by Adrian Burke on 17 May 2020
- Bay-breasted/Blackpoll Warbler Setophaga castanea/striataLast observed by David Nicosia on 28 Sep 2023