The Amur Falcon - Falco amurensis, formerly Eastern Red-footed Falcon, is a small bird of prey that breeds in south-eastern Siberia and Northern China and winters in Southern Africa.

Satellite tracking of raptors on migration has become an indispensable tool in studying the routes taken by birds. It is especially useful when used in areas where there are little chance of recovering ringed birds. In the past, it was not possible to track any of the small falcons due to the size of the satellite transmitters. However, in 2009, the first transmitters became available that were small enough not to affect the survival of the birds (typically <3% of the body mass). 

The Amur Falcon stands out as one of the most interesting birds to track. It migrates over a very long distance Eastern China to Southern Africa. It has different routes to and from its breeding grounds and it supposedly flies several thousands of its journey across the sea. This species is believed to then undertake the longest regular overwater passage of any raptor as it crosses the Indian Ocean between southwestern India and tropical East Africa, a journey of more than 4,000 km, which also includes nocturnal flight. Birds arrive in their southern African winter range in November-December and depart by early May.