The Eurasian Blackbird is very widespread throughout Europe and Asia.
Adult male Blackbirds are totally black.
They have a bright, golden-yellow bill and a yellow ring around the eye during spring and summer.
The bill darkens at the end of summer. 
Adult female Blackbirds are brown, often with spots and streaks on their breasts.
They have a brown bill (orange in older females). 
Juveniles resemble females, but they have pale spots on the upperparts.

1st photo: A male. In my yard, Hilversum, The Netherlands, 8 May 2013
2nd photo: A male. 's Graveland, The Netherlands, 23 June 2011
3rd photo: A female. In my yard, Hilversum, The Netherlands, 4 April 2017
4th & 5th photo: A male taking a sand bath, In my yard, Hilversum, The Netherlands, 6 July 2017