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Royston--Amber Way
Illustrated Checklist
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Native and Naturalized (89)
Hybrids (3)
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaLast observed by Camille Bock on 26 Jan 2020
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescensLast observed by Aldo Bertucci on 11 Sep 2021
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensLast observed by Liam Singh on 8 Mar 2020