CLASS AVES 591 



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

 CucuLiDiE, Cuckoos (Fig. 499); Psittacld,e, Cockatoos and 

 Parrots. 



Order 20. Coraciiformes. — Roller-like Birds. — Arboreal 

 birds with short legs; seven suborders and eighteen families. 

 Examples: Coraciid^e, Rollers; Alcedinid^e, Kingfishers 

 (Fig. 500); Strigid^e, Owls (Fig. 501); Caprimtjlgid^;, goat- 

 suckers; Trochilid^e, 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. C0TTNGID.E .... Cotingas 



3. Alaudid^e Larks 



4. Motacillid^e . . . Wagtails 



5. Turdid^e ..... Thrushes, Bluebirds, etc. 



6. Mimid^e Thrashers, Mocking-birds, etc. (Fig, 



504, H) 



7. Cinclid^e Dippers 



8. Troglodytid.*: . . Wrens (Fig. 504, G) 



9. Cham^eid^e .... Wren-Tits 



10. Sylviid.e Warblers, Kinglets, and Gnatcatchers 



n. Hlrundinid.*: . . . Swallows (Fig. 504, E) 



12. BoMBYCiLLiD,E . . Waxwings (Fig. 504, F) 



13. Ptilogonatid^e . . Silky Flycatchers 



14. Laniid,e Shrikes 



15. Vireonid.e .... Vireos 



16. Sittid^e o Nuthatches 



17. Parid.<e Titmice 



18. Corvid^e Crows, Jays, etc. (Fig. 504, B) 



19. SturniDjE Starlings 



