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Essex
Illustrated Checklist
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Native and Naturalized (336)
Exotic: Provisional (8)
Exotic: Escapee (25)
Hybrids (13)
- Graylag x Barnacle Goose (hybrid) Anser anser x Branta leucopsisLast observed by Rudraksha Chodankar on 28 Jan 2023
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensisLast observed by Chris Watson Lee on 13 Apr 2024
- Barnacle x Canada Goose (hybrid) Branta leucopsis x canadensisLast observed by Tony Kennelly on 9 Apr 2024
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaLast observed by Andy Benson on 19 May 1986
- Baikal x Green-winged Teal (hybrid) Sibirionetta formosa x Anas creccaLast observed by Ian Calvert on 21 Apr 2023
- Red-crested x Common Pochard (hybrid) Netta rufina x Aythya ferinaLast observed by Chris Shepherd on 1 Jan 2024
- Common Pochard x Tufted Duck (hybrid) Aythya ferina x fuligulaLast observed by Lee Evans on 5 Apr 2022
- Ring-necked x Tufted Duck (hybrid) Aythya collaris x fuligulaLast observed by Magnus Andersson on 5 Apr 2022
- Tufted Duck x Greater Scaup (hybrid) Aythya fuligula x marilaLast observed by Chris Watson Lee on 24 Feb 2024
- Chilean x Greater Flamingo (hybrid) Phoenicopterus chilensis x roseusLast observed by Jonathan Dean on 27 Mar 2004
- Black-headed x Mediterranean Gull (hybrid) Chroicocephalus ridibundus x Ichthyaetus melanocephalusLast observed by David Darrell-Lambert on 8 Apr 2024
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreusLast observed by Josh Jones on 3 Jan 2015
- Herring x Lesser Black-backed Gull (hybrid) Larus argentatus x fuscusLast observed by Tony Kennelly on 11 Apr 2024
Additional Taxa (67)
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Last observed by Peter Carr on 15 Feb 2020
- Black-headed/Mediterranean Gull Chroicocephalus ridibundus/Ichthyaetus melanocephalusLast observed by Phil Goldsmith on 8 Apr 2024
- Great Cormorant/European Shag Phalacrocorax carbo/Gulosus aristotelisLast observed by Chris Balchin on 14 Mar 2023
- Red-tailed/Isabelline Shrike Lanius phoenicuroides/isabellinusLast observed by Dominic Mitchell on 28 Oct 2016
- Marsh/Common Reed Warbler Acrocephalus palustris/scirpaceusLast observed by Simon Brown on 1 Jun 1993
- Willow Warbler/Common Chiffchaff Phylloscopus trochilus/collybitaLast observed by David Pallash on 3 Sep 2023
- Western/Eastern Subalpine Warbler Curruca iberiae/cantillansLast observed by Peter Stronach on 6 May 2004
- Goldcrest/Common Firecrest Regulus regulus/ignicapillaLast observed by David Pallash on 25 Mar 2024
- Twite/Eurasian Linnet Linaria flavirostris/cannabinaLast observed by Marion Bertuzzo on 11 Jan 1987