Periodic plumage changes in birds
![Periodic plumage changes in birds](/resources/medium/750/Periodic-plumage-changes-in-birds-12982.jpg)
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Larus smithsonianus
American Herring Gull
Adult in winter plumage.
Canada, Ontario, Barrie.
1/2/2016
AN018'02-160102095'JJK
![Periodic plumage changes in birds](/resources/small/128/Periodic-plumage-changes-in-birds-16957.jpg)
![Periodic plumage changes in birds](/resources/small/128/Periodic-plumage-changes-in-birds-29272.jpg)
![Periodic plumage changes in birds](/resources/small/128/Periodic-plumage-changes-in-birds-7220.jpg)
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