Adult male Eurasian Sparrowhawks have bluish grey upperparts and orange-barred underparts; females and juveniles are brown above with brown barring below.
Females are up to 25% larger and 50% heavier than males – one of the largest differences between the sexes in any bird species.
Males have thin legs. Males tend to take smaller birds like tits, finches and sparrows; females prefer thrushes and starlings.
Top & Left: This is a 2nd year male. Note the long nails which are characterictic for sparrowhawks. Oostvaardersplassen, The Netherlands, 1 March 2012
Middle: This is an adult female. Oostvaardersplassen, The Netherlands, 1 March 2012