American Ornithology Vol. VIII, Plate 66

This plate depicts a Wood Ibis, Scarlet Ibis, Flamingo and White Ibis.

According to the San Diego Zoo, the coloring of the flamingo comes from "the rich sources of carotenoid pigments (like the pigments of carrots) in the algae and small crustaceans the birds eat." http://animals.sandiegozoo.org/animals/flamingo