Lanner falcon

Description

It is a large falcon,at 43–50 cm (17–20 in) length with a wingspan of 95–105 cm (37–41 in).European lanner falcons (Falco biarmicus feldeggi,also called Feldegg's falcon) have slate grey or brown-grey upperparts;most African subspecies are a paler blue grey above.The breast is streaked in northern birds,resembling greyish saker falcons,but the lanner has a reddish back to the head.Sexes are similar,but the browner young birds resemble saker falcons even more.However,sakers have a lighter top of the head and less clear head-side patterns.The lanner's call is a harsh "wray-e".