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Berkshire
Illustrated Checklist
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Native and Naturalized (237)
Exotic: Provisional (4)
Exotic: Escapee (9)
Hybrids (3)
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by KP Duncan on 16 Mar 2024
- Gadwall x American Wigeon (hybrid) Mareca strepera x americanaLast observed by Paul Chapman on 3 Jan 1989
- Tufted Duck x Greater Scaup (hybrid) Aythya fuligula x marilaLast observed by Michael Hoit on 26 Dec 1996
Additional Taxa (30)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Stuart Fisher on 21 Aug 2015
- Common/Red-breasted Merganser Mergus merganser/serratorLast observed by Julia Schroeder on 17 May 2023
- Black-headed/Mediterranean Gull Chroicocephalus ridibundus/Ichthyaetus melanocephalusLast observed by Anonymous eBirder on 2 Feb 2024
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Last observed by Joseph Monkhouse on 26 Aug 2020
- Willow Warbler/Common Chiffchaff Phylloscopus trochilus/collybitaLast observed by Paul Etherton on 21 Aug 2023
- Goldcrest/Common Firecrest Regulus regulus/ignicapillaLast observed by Anonymous eBirder on 2 Mar 2024
- Twite/Eurasian Linnet Linaria flavirostris/cannabinaLast observed by Pauline Sinclair on 11 Mar 2024