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

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 beak. Ft. Pierre National Grassland, South Dakota. April.
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1. Greater Prairie-Chicken-Vyn-070414-0038.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 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
spring