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Dukes
Illustrated Checklist
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Native and Naturalized (385)
Exotic: Escapee (7)
Hybrids (5)
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensisLast observed by Margaret Curtin on 16 May 2020
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Lisa Maxfield on 26 Feb 2024
- Common x Arctic Tern (hybrid) Sterna hirundo x paradisaeaLast observed by Henry Stevens on 8 Jun 2020
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Bird Observer Data on 16 Sep 1998
- Magnolia x Yellow-rumped Warbler (hybrid) Setophaga magnolia x coronataLast observed by Mike Sylvia on 18 Oct 2019
Additional Taxa (77)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Valerie Burdette on 2 Aug 2023
- Yellow-billed/Black-billed Cuckoo Coccyzus americanus/erythropthalmusLast observed by maurice gilmore on 4 Jul 2020
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Thaw Malin on 14 Aug 2023
- Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticusLast observed by Marshall Iliff on 19 Jul 2008
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinusLast observed by Bernardo Alps on 9 Nov 2018
- white-winged gull sp. Larus sp. (white-winged gull sp.)Last observed by Carol Goldstein on 20 Feb 2023
- Cory's/Great Shearwater Calonectris diomedea/Ardenna gravisLast observed by Marshall Iliff on 16 Jul 2011
- black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)Last observed by Liam Waters on 28 Oct 2023
- Downy/Hairy Woodpecker Dryobates pubescens/villosusLast observed by Stephanie Mashek on 31 Dec 2023
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiLast observed by Bird Observer Data on 30 May 2008
- Streaked/Sulphur-bellied Flycatcher Myiodynastes maculatus/luteiventrisLast observed by MARC Data on 13 Nov 1983
- Loggerhead/Northern Shrike Lanius ludovicianus/borealisLast observed by Bird Observer Data on 24 Aug 2004
- Gray-cheeked/Bicknell's Thrush Catharus minimus/bicknelliLast observed by Bird Observer Data on 16 Oct 2011
- Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow) Ammospiza nelsoni/caudacutaLast observed by Evan Lipton on 19 Oct 2019