Anas platyrhynchos
In all plumages distinguished by blue or purple speculum boldly framed in white. Male: metallic green head, brown breast, grey body and yellow bill. Female: brownish with dark speckles. Bill with variable, uneven orange markings on sides. Differs from Gadwall and Pintail by being noticeably more heavily built.
Female: A distinct coarse, laughing quacking; "haaa ha ha ha ha ha", with first note accented and then descending in pitch. Male: a more silent, very nasal "rriib". Display call a high-pitched short whistle.
Wikipedia: map (se also Xeno-canto below)
Birdlife ecology
Sounds:Recorded by Stein Ø. Nilsen,http://www.xeno-canto.org ,CC license