a vesper sparrow pooecetes gramineus perched on barbed wire on the pawnee grasslands

animal aves avian background barbed beautiful biology bird birding birds birdwatching close closeup color colorado conservation day detail ecology environment environmental extinction fauna field foraging global gramineus grasslands habitat natural nature ornithology outdoor outdoors outside pawnee perched perching pooecetes portrait space sparrow summer survival tourism travel vesper wild wildlife winged wire