280 WARBLERS. 



2. RUBY-CROWNED KINGLET, R. calendula. Dif- 

 fers from 1 in having a partly concealed spot of ruby-red on 



Fig. 374. 



CC, U, a, 1. 



crown with no other 

 markings, although the 

 female sometimes has 

 this it is usually absent. 

 Breeding range in the 

 east similar to 1, but win- 

 ters further south, to 

 southern Fla. and Mexi- 

 co ; rarely north to Mass. ; 

 north in April ; south in ' 

 Sep. and Oct. Song, be- 

 gins with a few lisping 

 notes, runs into a clear, 

 high warble, ending with 

 some notes with a rising 



inflection. Occurs mostly in woodlands. Fig. 375. 



V. GNATCATCHERS. Polioptilidae. 



Yery small with short, rounded wings, long tails, round- 

 ed and white marked; bills, long, somewhat flattened; hab- 

 its, flycatcher-like. Fig. 375. 



a. Gnatcatchers. 

 Polioptila. 



Characters as above. 



1. BLUE-GRAY GNAT- 

 CATCHER, P. CAERULA. 4.75 ; 

 bluish-gray above; bluish- 

 white beneath ; U-shaped line 

 on forehead extending back on 

 sides of head, black ; nearly 

 whole of outer and terminal spot on two next tail feathers, 

 white, fig. 376. Female, without black on forehead. Breeds 

 from N. J. west to southern Mich, south to the Gulf States; 



CC, U, a, 2. 1-3. 



