The cheerful-voiced Chestnut-collared Longspur shares its northern prairie breeding range with grazing cattle. Although heavy grazing can have adverse effects, breeding densities of longspurs jump by two, three, or even 10 times when ranchers graze their cattle responsibly on native prairies. Two centuries ago, the birds were probably more abundant on prairies used by bison than on untouched stands of tall grass.

More info and transcript at BirdNote.org. 

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