Black-chinned Sparrow (Spizella atrogularis)

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Black-chinned Sparrow (Spizella atrogularis), male perched, Chisos Mountains, Big Bend National Park, Chihuahuan Desert, West Texas, USA
Black-chinned Sparrow (Spizella atrogularis), male perched, Chisos Mountains, Big Bend National Park, Chihuahuan Desert, West Texas, USA