‘black-headed’ Great Tits in Denmark

This bird was photograped in Aarhus on March 4, 2010. It has a completely black head, due to a genetic mutation causing melanism - the laying down of extra pigment in the feathers. Other such individuals have been recorded elsewhere like this ‘black-headed’ Great Tits in UK and this ‘black-headed’ Great Tits in Denmark.

See also this ‘black-headed’ Blue Tit in Denmark.