Cliff Swallows (Petrochelidon pyrrhonota) in their nest made of mud

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Size: 3627px × 2413px
Location: Lamar Valley, Yellowstone National Park, Wyoming, USA
Photo credit: © Clarence Holmes Wildlife / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: america, american, animal, animalia, animals, aves, avian, bird, birds, chordata, chordates, cliff, hirundinidae, mud, nature, nest, nesting, north, passeriformes, passerine, petrochelidon, pyrrhonota, states, swallow, swallows, united, usa, wildlife