A snowy tree cricket feeds on a leaf from a mountain dalea plant. Gerardine Vargas hide caption
Wild Sounds Take a walk through remote areas of the planet with this series of field recordings from unusual animals. You'll hear roars that penetrate through three miles of tropical forest; maniacal laughs that break the Australian bush dawn; and a barking, bugling, colorful-billed bird.

Special Series
Wild Sounds
Take a walk through remote areas of the planet with this series of field recordings.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