APPENDIX 485 



2'. Under parts not reddish or spotted. 



>. Upper parts bluish gra> . 



4. Tail very short XUTHATCHES ; see Sitta, p. 4.">:j. 



4'. Tail not very short . . GNATCATCHERS ; see Poliojjtila, p. 405. 



! . Upper parts gray or brown. 



4. Throat black CHICKADEES; see Parus, p. 455. 



4'. Throat not black. 



"">. Head crested TITMICE ; see Parus. p. 4.~>.~>. 



5'. Head not crested. 

 G. Tail very short. 



7. Plumage slate \ ray WATER OUZEL, p. 432. 



7'. Plumage dark brown. 



WESTERN WINTER WREN. p. 449. 

 G'. Tail not very short. 



7. Wings and tail strikingly marked with white. 



MOCKINGBIRD, p. 485. 

 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 superciliary. 



BEWICK WRENS ; see Thryomanes, p. 44. 

 10'. Head without white superciliary. 



HOUSE WRENS ; see Troglodytes, p. 448. 



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



not barred . BusH-TiTS ; see Psaltriparus, p. 460. 



