an adult sage thrasher oreoscoptes montanus perched on the pawnee national grasslands in colorado

adaptation adult animal avian barbed biology bird birding birds birdwatching carbon change climate closeup colorado conservation conservatism ecology emissions environment extinction gases global grasslands greenhouse habitat hunting indicator insects microevolution modeling montanus national natural nature niche oreoscoptes ornithology outside pawnee perched richness sage science species temperatures thrasher threatened tourism warmdwelling warming wild wildlife wire