This Mallard has been present usually near the yacht marina for the last three years. It is always in this intriguing plumage variation which appears to be a combination of mostly eclipse plumage with some male plumage. See comments
Common Goldeneye 26 [5 males 3 imm males and 18 females]
Gadwall 4
Common ChiffChaff 1 singing
The Mallard looks like it might be an old female that has developed hormone issues. The bill is 'female type', as even eclipse males have olive bills.
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