Birds & Blooms on MSN
10 fascinating barn swallow facts
From symbolism to bug catching abilities, there's a lot to learn about a barn swallow. Learn about their nests, songs, range ...
Hawk mimicry in cuckoos and anti-parasitic aggressive behavior of barn swallows in Denmark and China
Hosts of brood parasites defend their nests against parasitism by aggression and subsequently, if parasitized, by rejection of the parasite egg or nestling. Cuckoos have evolved plumage mimicry with ...
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