THE BIRDS OF NORTH AMERICA, 87 
ORDER XIIL—PSITTACI (PARROTS, PAROQUETS, 
ETC.). 
Toes four, two in front and two behind; bill with a 
cere, or covering of skin, at its base. 
Famity 39.— Psittacide. Parrots and Paroquets ; 1 
species, 
ORDER XIV.—COCCYGES (CUCKOOS AND KING- 
FISHERS). 
Toes four, two in front and two behind (Cuckoos), or 
three in front, the middle and outer ones joined for half 
their length; bill without a cere. 
FamiLy 40.—Cuculide. Cuckoos, Anis, etc. ; 7 species. 
Famity 41.—Trogonide. Trogons ; 1 species. 
FamiLy 42.—Alcedinide. Kingfishers ; 3 species. 
ORDER XV.—PICI (WOODPECKERS). 
Toes four, or, rarely, three; two in front; bill strong; 
tail-feathers usually pointed and stiffened. 
Fami.Ly 43.—Picide. Woodpeckers ; 24 species. 
ORDER XVL—MACROCHIRES (GOATSUCKERS, 
SWIFTS, AND HUMMINGBIRDS). 
Feet very small and weak ; bill short, and mouth large 
(Goatsuckers and Swifts), or bill long and exceedingly 
slender (Hummingbirds); wings generally long and 
pointed. 
FamiLy 44.—Caprimulgide. Goatsuckers 7 6 species. 
FamiILy 45.—Micropodide. Swifts ; 4 species. 
Famity 46.—Trochilide. Hummingbirds ; 18 species. 
ORDER XVIL—PASSERES (PERCHING BIRDS). 
Toes four, without webs, all on the same level; hind 
toe as long as the middle one ; its nail generally longer 
