A snowy tree cricket feeds on a leaf from a mountain dalea plant. Gerardine Vargas hide caption

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Slo-Mo Cricket Chirps Reveal Secret Serenades

The slight differences in the patterns of cricket chirps are undetectable to the human ear, but may actually determine how crickets recognize their own kind.

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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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