Aerial Broadcasting
Lacking a perch taller than a dried weed stem or a rock, the longspur resorts to flight songs--a lot of them. A surprising number of common birds have flight songs (indigo buntings, yellow-breasted chats, ovenbirds, Kentucky warblers, Acadian flycatchers, mockingbirds, and many others). These could be called forest birds, and flight songs are more or less optional for them. They'll fly and sing at dawn and dusk, or, like the chat and indigo bunting, intermittently through the day. For grassland birds, which have a hard time finding a perch tall enough to work with, flight songs are a more important component of their courtship display. Think horned lark, pipits, and these longspurs. Even the small, secretive sparrows engage in flight songs. The idea is to broadcast your message of sex or defiance as far and wide as you are able. Birds often adopt a striking flight style while singing on high.
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It was a longspur feast. Just another time I am so happy not to be shooting film! I have him launching himself in the air, assuming a leg position I'd never dare draw...
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Labels: chestnut-collared longspur, flight songs, North Dakota
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