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Patapsco Valley SP--Henryton
Illustrated Checklist
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Native and Naturalized (164)
Additional Taxa (19)
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperiiLast observed by Benjamin Costello on 28 Apr 2021
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by Benjamin Costello on 17 Jul 2021
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Tim Houghton on 6 May 2015
- Philadelphia/Red-eyed Vireo Vireo philadelphicus/olivaceusLast observed by Steve Collins on 8 May 2016
- Louisiana/Northern Waterthrush Parkesia motacilla/noveboracensisLast observed by Chuck Stirrat on 23 Aug 2023