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Magpies Screaming at an American Marten

© Mark Elbroch / Panthera

The intensity of alarm calls tells you a lot about the threat that a predator poses to its prey... In this case, these magpies are clearly unhappy about sharing an elk carcass, provided by F61, with an American marten, which is a large arboreal member of the weasel family. Martens are definite predators of birds and a real threat to even the likes of magpies, highly intelligent birds that are more likely to mob predators rather than run from them.