JOURNAL OF MAINE ORNITHOLOGICAL SOCIETY. 33 



are red-brown instead of buff. The song is "Chick-a-dee-dee-dee," 

 but is different in tone from the song of the Black-capped species, it 

 being a nasal tenor. Some of its notes are entirely different from 

 those of the Chickadee, one of them being a "chip" in the same tone 

 as the song. Perhaps some idea of the bird's appearance may be 

 gained by making a comparison between the Chickadees and Nut- 

 hatches. With regard to color of plumage and tone of voice, the 

 Hudsonian Chickadee may be said to have the same relation to the 

 Chickadee that the Red-breasted Nuthatch has to the White-breasted 

 Nuthatch. 



Contributions to the Life History of the Black= 

 throated Blue Warbler. 



Dcndroica cacr2descc7is {Gviel.). 

 By Ora W. Knight, Baugor, Me. 



Geographical Distribution — Migration Range. — East- 

 ern North America, northward to Labrador ; in winter ranging from 

 Key West, Florida, Cuba and Haiti, in which places it is common 

 southward to Central America (one specimen from Coban, Guate- 

 mala) and South America (one specimen only from L,as Nubes, 

 Colombia). 



Breeding Range. — Northern Maine and Minnesota north- 

 ward to Labrador, and south in the mountains to Pennsylvania. 



Winter Range. — From Key West to Cuba, Haiti and 

 adjacent territory southward to Central America, only rarely reach- 

 ing the southern limit given; once recorded as wintering near 

 Boston, which seems very astonishing. 



In the spring migration this species enters southern Maine 

 about May T5th, and individuals may be seen in the central portions 

 of the State by May 20th, while the northern sections are reached a 

 few days later. The species is quite common in migrations, most 



