brucebyersconsulting_philadelphia_audubon12
The Black Oystercatcher, Haematopus bachmani, by John James Audubon, Plate 427, Birds of America. https://upload.wikimedia.org/wikipedia/commons/9/98/427_I._White-legged_Oyster-catcher_-_2._Slender-billed_Oyster-catcher.jpg
brucebyersconsulting_philadelphia_audubon12