Description: dark crown, 'moustache' cheek pattern & grey upper parts. White underparts are barred with black. Female more strongly barred and also larger than male.
Size: length: 38 - 48cm. wingspan: 95 - 110cm.
Carrot said:This is the closest I can find to a peregrine that looks like your photo. I'm still not convinced. Especially since I've found photos and descriptions that describe a female sparrowhawk as looking like the bird in your garden and being large enough to "hunt larger birds including collared doves, thrushes and starlings." :s