House sparrow, Passer domesticus, and dark-eyed junco, Junco hyemalis. English sparrow, male 1, female 2, and snow-bird, male 3, female 4. Chromolithograph after an ornithological illustration by John James Audubon from Benjamin Harry Warrens Report on the Birds of Pennsylvania, E.K. Mayers, Harrisburg, 1890.
House sparrow, Passer domesticus, and dark-eyed junco, Junco hyemalis. English sparrow, male 1, female 2, and snow-bird, male 3, female 4. Chromolithograph after an ornithological illustration by John James Audubon from Benjamin Harry Warrens Report on the Birds of Pennsylvania, E.K. Mayers, Harrisburg, 1890.