two seagulls are standing on a rocky shore

Title: Havell's tern, 1. Trudeau's tern, 2 : Sterna havelli, Aud. Sterna trudeaui, Aud. c.1 v.4 plate 409 Artist: Audubon, John James, 1785-1851 Engraver: Havell, Robert, 1793-1878 Name on Item: Drawn from nature by J. J. Audubon F.R.S. F.L.S. Engraved, printed & coloured by Rob't. Havell, 1838. Date: 1838 https://www.digitalcommonwealth.org/search/commonwealth:9s16d8643