"Fig. 26 - Parts of a Bill. a, side of upper mandible; b, culmen; c, nasal fossa; d, nostril; e(see…
"fig. 25 - Topography of a Bird. 1, forehead (frons). 2, lore. 3, circumocular region. 4, crown (vertex).…
"Chroicocephalus atricilla. Laughing Gull. Black-headed Gull. Bill longer than middle toe and claw,…