Gerrit Vyn Photography –

Gerrit Vyn is a conservation and wildlife photographer and cinematographer dedicated to telling the stories of endangered animals and habitats. He is a producer for the Cornell Lab of Ornithology and a fellow of the International League of Conservation Photographers

Grouse

Aggressive encounter between two male Greater Prairie-Chickens (Tympanachus cupido) on a lek. During aggressive encounters males lower their pinnae feathers, deflate their air sacs, leap into the air, and strike their opponent with feet, wings, and/or beak. Ft. Pierre National Grassland, South Dakota. April.
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99. Greater Prairie-Chicken-Vyn-070414-0071.tif

Aggressive encounter between two male Greater Prairie-Chickens (Tympanachus cupido) on a lek. During aggressive encounters males lower their pinnae feathers, deflate their air sacs, leap into the air, and strike their opponent with feet, wings, and/or beak. Ft. Pierre National Grassland, South Dakota. April.

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Keywords:
Ft. Pierre National Grassland
Greater Prairie-Chicken
Prairie
South Dakota
Tympanachus cupido
aggression
bird
booming
courtship
display
endangered species
fight
grouse
lek
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