An aggressive encounter between two male greater prairie chickens (Tympanuchus cupido). During aggressive encounters, males leap into the air and strike their opponent with feet, wings and/or beak. Fort Pierre National Grassland, South Dakota. Gerrit Vyn/gerritvynphoto.com hide caption

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Gerrit Vyn/gerritvynphoto.com

Grunts And Gurgles Signal Love For Grouse

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Sounds Give Researchers Clues To Elephants

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Hum Along With Male Plainfin Midshipman Fish

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Alpha Bison: The Quieter Bellow Wins The Females

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Mating Rituals: Hammerhead Bats Honk To Woo

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Laughing's No Joke For Spotted Hyenas

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A Colony of Screechers And Wailers

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Frogs Pipe Up After Australian Desert Downpour

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A Bird With A Catlike Name — And Sound

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Proud Lyrebird Steps Up To The Microphone

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Sounds From The Wild: The Laughing Kookaburra

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A Run-In With An Australian Desert Lizard

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