Eurasian hobby "Falco subbuteo", hen harrier "Circus cyaneus" and merlin "Falco columbarius". Other avian predators of adults have included peregrine falcons ("Falco peregrinus") and merlins ("Falco columbarius"). Calidris alpina schinzii, Falco columbarius, Lagopus lagopus, and Circus pygargus. Birds of prey include the merlin ("Falco columbarius") and bald eagle ("Haliaeetus leucocephalus"). Cooper's hawk are also counted as a predator of merlins ("Falco columbarius").