APPENDIX 485 



2'. Under parts not rerldish or spotted. 

 3. Upper parts bluish gray. 



4. Tail very short NUTHATCHES ; see Sitta, p. 4r)3. 



^ 4', Tail not very short . . Gnatcatchers ; see Folioptila, ]k 4Go. 

 3'. Upper parts gray or brown. 



4. Throat blaek Chickadees; see Parus. p. 4;"35. 



4'. Throat not black. 



5. Head crested Titmice ; see Parus. p. 455. 



5'. Head not crestejl. 

 6. Tail very short. 



7. Plumage slate < ray Waier Ouzel, p. 432. 



7'. Plumage dark brown. 



Western Winter Wren, p. 440. 

 G'. Tail not very short. 



7. Wings and tail strikingly marked with white. 



iMoCKINGBIRD. p. 435. 



7'. Wings and tail not strikingly marked with white. 



8. Plumage dark slate gray .... Catbird, p. 437. 

 8'. Plumage not dark slate gray. 



1>. Plumage deep brown ; wings and tail barred with 

 black. 

 10. Head with white su])erciliary. 



Bewick Wrens ; see Thryomanes, p. 440. 

 10'. Head without white superciliary. 



House Wrens; see Troglodytes, -p. 44S. 



1). Plumage dull smoky gray or brown ; wings and tail 



not barred . Bush-Tits ; see J'sultriparua, p. 400. 



