Stock photography, photos: Tree Swallow Stock photos of A close up of a tree swallow. Photograph: © Dan Creighton Click for a larger image and more information Keywords associated with this stock photo: ecology, ecosystem, tree swallow, nature, environment, wildlife, zoology, aves, environmentalism, avian, beasts, Tachycineta bicolor, animal, creature, beast, habitat, swallow, bird, dominant colour, blue, flight, birds, fly, IMAGE/COLOR/STYLE/FORMAT, white, flying, dominant color, sports & recreation, outdoors, birding, scenery, CATEGORIES, action motion, bird watching, recreation, ACTIVITIES/ACTION, outdoor recreation