THE BIRDS OF NORTH AMERICA, 87 



ORDER XIII. PSITTACI (PARROTS, PAROQUETS, 



ETC.). 



Toes four, two in front and two behind ; bill with a 

 cere, or covering of skin, at its base. 



FAMILY 39. Psittacidce. 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. Cuculidce. Cuckoos, Anis, etc. ; 7 species. 



FAMILY 41. Trogonidm. Trogons ; 1 species. 



FAMILY 42. Alcedinidce. Kingfishers ; 3 species. 



ORDER XV. PICI (WOODPECKERS). 



Toes four, or, rarely, three; two in front; bill strong; 

 tail-feathers usually pointed and stiffened. 



FAMILY 43. Picidoe. Woodpeckers ; 24 species. 



ORDER XVI. 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:.Caprimulgidce. Goatsuckers ; 6 species. 



FAMILY 45. Micropodidce. Swifts ; 4 species. 



FAMILY 46. Trochilidce. Hummingbirds ; 18 species. 



ORDER XVII. PASSERES (PERCHING BIRDS). 



Toes four, without webs, all on the same level ; hind 

 toe as long as the middle one ; its nail generally longer 



