Female mountain bluebird (Sialia currucoides) with a caterpillar, Yellowstone National Park, Wyoming, United States of America, North America

bluebird bird wildlife female caterpillar food yellowstone national park yellowstone wyoming usa us united states united states of america north america photography colour image colour color image color horizontal outdoors outside no people nobody no one no one day animal themes wild nature the natural world female mountain bluebird sialia currucoides caterpillar united states of america north america two animals full length side view eating feeding grey national park animals in the wild