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Região Autónoma dos Açores
Illustrated Checklist
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Native and Naturalized (335)
Exotic: Provisional (4)
Exotic: Escapee (14)
Hybrids (5)
- Graylag x Swan Goose (hybrid) Anser anser x cygnoidesLast observed by Holger Schneider on 18 May 2023
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosLast observed by Francisco Pires on 28 Feb 2022
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesLast observed by Dominic Mitchell on 17 Oct 2022
- Little Egret x Western Reef-Heron (hybrid) Egretta garzetta x gularisLast observed by Mary McMahon on 21 May 2017
- Brewster's Warbler (hybrid) Vermivora chrysoptera x cyanoptera (F1 hybrid)Last observed by Adam Selmeczi-Kovacs on 21 Oct 2015
Additional Taxa (36)
- Mallard/American Black Duck Anas platyrhynchos/rubripesLast observed by Pietro D'Amelio on 17 Oct 2019
- Common Ringed/Semipalmated Plover Charadrius hiaticula/semipalmatusLast observed by Dominic Mitchell on 9 Oct 2018
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceusLast observed by Attila Steiner on 13 Oct 2015
- Yellow-legged/Lesser Black-backed Gull Larus michahellis/fuscusLast observed by Carlos Pereira on 8 Feb 2020
- West African Crested/Royal Tern Thalasseus albididorsalis/maximusLast observed by Toni Mulet on 30 Jun 2016
- Hydrobates sp. (Band-rumped complex) Hydrobates sp. (Band-rumped complex)Last observed by Rúben Coelho on 28 Aug 2021
- black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)Last observed by Carlos Pereira on 29 Jan 2023
- shearwater sp. Procellariidae sp. (shearwater sp.)Last observed by Martín Rey Pellitero on 22 Sep 2022