CLASS AVES 



591 



may be reversible ; two suborders and four families. Examples: 

 CUCULID.E, Cuckoos (Fig. 499); PSITTACID.E, Cockatoos and 

 Parrots. 



Order 20. Coraciiformes. ROLLER-LIKE BIRDS. Arboreal 

 birds with short legs; seven suborders and eighteen families. 

 Examples: CORACIHLE, Rollers;' ALCEDINID.E, Kingfishers 

 (Fig. 500); STRIGID^E, Owls (Fig. 501); CAPRIMULGID.E, goat- 

 suckers'; TROCHILHLE, Humming-birds (Fig. 502); MICRO- 

 PODID.E, Swifts; PICID.E, Woodpeckers (Fig. 503). 



Order 21. Passeriformes. SPARROW-LIKE BIRDS. More 

 than half of all the birds known belong to this order. There 

 are two suborders, four superfamilies, and sixty-four families. 

 The twenty- five North American families are as follows: 



FAMILY COMMON NAME 



1. TYRANNID^E .... Tyrant Flycatchers (Fig. 504, A) 



2. COTINGID^E .... Cotingas 



3. ALAUDID.E Larks 



4. MOTACILLID^E . . . Wagtails 



5. TURDID^: Thrushes, Bluebirds, etc. 



6. MIMID.E Thrashers, Mocking-birds, etc. (Fig. 



504, H) 



7. CINCLID.E Dippers 



8. TROGLODYTID.E . . Wrens (Fig. 504, G) 



9. CHAM^ID^: .... Wren-Tits 



10. SYLVIID^ Warblers, Kinglets, and Gnatcatchers 



11. HIRUNDINID.*: . . . Swallows (Fig. 504, E) 



12. BOMBYCILLID^: . . Waxwings (Fig. 504, F) 



13. PTILOGONATID.E . . Silky Flycatchers 



14. LANIID.E Shrikes 



15. VIREONID.E .... Vireos 



1 6. SITTID^: Nuthatches 



17. PARID.E Titmice 



1 8. CORVID.E . . ., . . Crows, Jays, etc. (Fig. 504, B) 



19. STURNID.E , , Starlings 



