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

Male Greater Prairie-Chicken (Tympanachus cupido) displaying on a lek. Booming is a low frequency 3-syllable sound produced by the syrinx and amplified by the esophageal air sacs of males. During the Booming display males produce sounds by stamping their feet, Wing-shaking, and Tail-clicking. Ft. Pierre National Grassland, South Dakota. April.
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Male Greater Prairie-Chicken (Tympanachus cupido) displaying on a lek. Booming is a low frequency 3-syllable sound produced by the syrinx and amplified by the esophageal air sacs of males. During the Booming display males produce sounds by stamping their feet, Wing-shaking, and Tail-clicking. Ft. Pierre National Grassland, South Dakota. April.

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