US Department of the Interior on Twitter: "Tis the season for head-butting-- if you follow the bighorn sheep battles @YellowstoneNPS, that is. Pic courtesy of Kate Ochsman https://t.co/sSUr3YeULv" / Twitter
6 BIGHORN SHEEP RAMS HEADBUTTING in the RUT HD - Wildlife Photography/Colorado/Tetons/Jackson Hole - YouTube