HORNLESS OWLS 169 Snow Owls, Barn or Screech Owls, Hawk or Canada Owls, Brown or Tawny Owls, Ural, Burrowing and Sparrow Owls. THE FALCON FAMILY 169 Sea-Eagles, Eagles, Stone Eagles, Harpy Eagles, Buzzards. THE VULTURE FAMILY 173 King Vulture, Bearded Griffon, Condor. THE NATATORES—SWIMMING BIRDS. THE FAMILY OF DIVERS 176 Great Northern Diver, Penguin, Auk, Grebes. DUCKS, GEESE AND SWANS 182 Wild and Domestic Ducks, Sea Ducks, Fresh-water Ducks, Wild and Domestic Geese, Mute and Whistling Swans, Black Swan of Australia, Black-necked Swan. THE PELICAN FAMILY 183 LONG-WINGED SWIMMING BIRDS. 190 Albatros, Petrels, Gulls. GRALLATORES—WADING BIRDS. WADERS WITH UNITED TOES 195 Avocet, Stilt Bird. WADING-BIRDS WITH LONG BILLS 197 Woodcocks, Snipes, Reed Hens. WADING-BIRDS WITH KNIFE-SHAPED BILLS 199 Storks, Argala or Adjutant, Marabou, Spoonbill, Cranes. WADING-BIRDS WITH COMPRESSED BILLS 203 Curious Types, Flamingo, Frigate. THE SHORT-WINGED BIRDS 206 Ostrich, Rhea. SCRANSORES—CLIMBING BIRDS. THE PARROT FAMILY 209 Grey Parrot or Jaco, Green Parrot, Macaw, Parrakeets, Amazonian Parrot. THE COCKATOO FAMILY 214 Trumpet Cockatoo, Great White Cockatoo, Leadbeater’s Cockatoo, Toucans. THE CUCKOO FAMILY 214 Trogons, Honey-Guides, Anis, Barbets, Touracos, Plantain-Eaters. THE WOODPECKER FAMILY 217 Ivory-Billed Woodpeckers, Spotted Woodpeckers, Downy Woodpeckers. GALLINACEAE—DOMESTIC BIRDS. THE PARTRIDGE FAMILY 220 Grey Partridge, California Partridge. THE GROUSE FAMILY 222 Black Grouse, Ruffled Grouse, Hazel Grouse, Heathcock. THE PIGEON FAMILY 224 Crowned Pigeon, Fan-Tailed Pigeon, Wheeling Pigeon, Tumbler Pigeon, Carrier Pigeon. THE PHEASANT FAMILY 225 Silver Pheasant, Golden Pheasant. PASSERINES—THE SPARROW FAMILY. HUMMING BIRDS 229 Sword-bill Humming Bird, Crested Humming Bird.