Amur Falcon

The male Amur falcon is characteristically dark sooty grey above with rufous thighs and vent. In flight the wing lining is white, contrasting with the dark flight feathers, whereas adult males of the closely related red-footed falcon have a dark grey wing lining. In Africa males can be confused with melanistic Gabar goshawks, but the chestnut vent is distinctive, and the sooty falcon and grey kestrel both have yellow feet and cere. (Wikipedia, general species account)

The wings are long, with a span of 63–71 centimetres, and at rest the wing tip reaches or extends just beyond the tail tip. A small falcon, it breeds in southeastern Siberia and northern China before migrating in large flocks across India and over the Arabian Sea to winter on the southern and east African coasts. (Wikipedia, general species account)