OF ORNITHOLOGY 145 



Order 11. Grallae — Stilt-walkers. 



80 Otididae Bustards. 



81 Gruiidae Cranes. 



82 Psophiidae Trumpeters. 



[Chionididae.] 

 [Rhinochetidae.] 



83 Charadridae Plovers. 



84 Scolopacidas Snipes. 



85 Parridae Jacanas. 



86 Rallidae Rails. 



Order 12. Steganopodes — Web-footed Birds. 



87 Pelecanidae Pelicans. 



88 Phalacrocoracidas Cormorants. 



89 Sulidae Gannets. 



90 Plotidae Darters. 



91 Tachypetidae Frigate Bird. 



92 Phaethontidae Tropic Birds, 



Order 13. Longipennes — Long-winged Birds. 



93 Laridae Gulls. 



94 Procellaridas Petrels. 



Order 14. Lamellirostres — Plated-billed Birds, 



95 Palamedeidae Horned Screamers. 



96 Phoenicopteridae Flamingoes. 



97 Cygnidae Swans. 



98 Anseridae Geese. 



99 Plectropteridae Spur-wing. 



[Tadornidae.] 



100 Anatidae River Ducks. 



101 Fuligulidae Sea Ducks. 



102 Erismaturidas Ruddy Ducks. 



103 Mergidas Fish Ducks. 



Order 15. Pygopodes — Diving Birds. 



104 Colymbidae Divers. 



105 Alcidae Auks. 



106 Spheniscidae Penguins. 



