164 THE CHICAGO ACADEMY OF SCIENCES. 



Dendroica blackburnise (Gmelin). Blackburnian Warbler. 

 Motacilla blackburnice GMELIN, S. N., I., ii, 1788, 977. 

 Sylvia blackburnice LATHAM, Ind. Orn., II, 1790, 527. 

 Sylvicola blackburnice SWAINSON, Philos. Mag., n. s., I, 1827, 434. 

 Dendroica blackburnice BAIBD, Rep. Pacific R. R. Surv., IX, 1858, 274. 

 Popular synonyms : ORANGE-THROATED WARBLEE. HEMLOCK WAR- 

 BLER. 



The Blackburnian Warbler is a common migrant, which in 

 the spring may appear within our limits from the last of April 

 to the first of May, and again in the fall from the middle of 

 August to the last of September. 



The range of this Warbler covers North America chiefly east 

 of Manitoba and the Plains, casually west to Utah, New Mexico 

 and western Texas. It breeds from the northern United States 

 northward to the southern shores of Hudson Bay, the Alleghany 

 mountains south to western North Carolina, and in the higher 

 altitudes of South Carolina (Pickens County) and eastern Ten- 

 nessee (Roan Mountains). It winters southward through eastern 

 Mexico and Central America to Peru in South America, and to 

 the Bahama Islands. 



Dendroica dominica albilora Ridgway. Sycamore Warbler. 



Dendroica dominica var. albilora BAIRD, MS., RIDGWAY, Amer. Nat., 



VII, Oct. 1873, 606. 

 Dendroica dominica var. albilora NELSON, Bull. Essex Inst., VIII, 



1876, 99. 

 Dendroica dominica albilora RIDGWAY, A. O. U. Check List, 1895, 278. 



In 1876, Mr. Nelson reported this species as follows:* "A 

 very rare summer visitant from the south." Mr. T. H. Douglas 

 recently showed me a fine adult male taken at Waukegan in 

 the spring of 1876. Mr. A. W. Butlerf reports it as a common 

 summer resident in southern Indiana, and as a rare visitant in 

 the vicinity of Brookville and Fort Wayne, Indiana. The Syca- 

 more Warbler has been reported from Monroe County and from 

 Detroit, Michigan. There is no apparent reason why this 

 Warbler should not be found in our area, particularly in the 

 swampy portions of Cook County and Lake County. Indiana. 



The range is given as follows in the A. O. U. Check-list: 

 "Mississippi Valley, west to the Plains, north to Lake Erie and 

 southern Michigan, and east to western North Carolina; in 

 winter south to southern Mexico, Honduras, Guatemala and 

 Nicaragua." 



*Birds of Northeastern Illinois, p. 99. 

 fBirds of Indiana, p. 1065. 



