Golden eagles have been filmed hunting and attempting to kill reindeer calves. One eagle was filmed swooping down and grabbing a calf, while another pulled out of an attack at the last minute.
A BBC natural history film crew gathered the extraordinary footage along a reindeer migration route in northern Finland.
BBC claims that "it finally proves this eagle species does occasionally hunt reindeer". Well, at least here in Finland it's well known fact and scientists have prooved that reindeers form 7% of the diet of Golden Eagle.
Anyway - a very interesting footage. The footage is available at BBC Earth News.