JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 647 



Length, 4.90; wing, 2.70; tail, 1.70; bill, .35. 



This plain colored little Warbler is an abundant migrant in 

 Illinois and Wisconsin during spring and fall. It arrives on its way 

 north in May and is with us again from the latter part of August until 

 October. Mr. Ernest E. Thompson admirably describes the song 

 as beginning with chipiti, chipiti, repeated a dozen times or more 

 with increasing rapidity, then suddenly changing into a mere twitter. 



Genus COMPSOTHLYPIS Cabanis. 



309. Compsothlypis americana (LiNN.). 

 PARULA WARBLER. 



Distr.: Eastern United States west to the Plains and north to 

 Canada; south in winter to Central America and the West Indies; 

 breeds in suitable localities nearly throughout its United States 

 range. 



Adult male: Upper parts, grayish blue, a broad patch of greenish 

 yellow across middle of back; lores, blackish; a white spot on the 



eyelids; upper throat and lower breast, 

 yellow, separated by a more or less 

 perfect chest band of black bordered 

 with orange brown ; belly, white ; sides 

 washed with grayish blue; wings, dark 

 fuscous, narrowly edged with grayish 

 blue; the greater and middle coverts, 

 tipped with white, forming wing bands ; 

 Paruia Warbler. ^j^ dark fuscous, the outer feathers 



with broad white patches on inner webs. 



Adult female: Similar, but paler; the breast band much less dis- 

 tinct and sometimes absent. 



Length, 4.65; wing, 2.40; tail, 1.75; bill, .36. 

 The Paruia Warbler is a common summer resident in Illinois 

 and Wisconsin in localities where there are swampy forests, build- 

 ing its nest in the long gray lichens or "gray -moss," which grow on the 

 trees in such places. Away from forests it occurs as a migrant. It 

 arrives early in May and leaves for the south in September. 



The eggs are from 3 to 5, dull white or cream white, speckled 

 and marked with rufous brown chiefly at the larger end, and measure 

 about .65 x .46 inches. 



Compsothlypis americana ramalince Ridgway is no longer recog- 

 nized as separable. 



