CATALOGUE OF CANADIAN BIRDS. 575 



9th, and we saw two about the buildings at White pass summit, 

 June loth; at Log Cabin they were common, June i4-2oth; a few 

 were noticed at Lake Bennett, June 19-2 ist. I refer all seen to this 

 sub-species, because all had remarkably long tails. {Bishop.) 

 Walking along the hills near the village of St. George on May 28th, 

 1890, with Mr. Ed. Lavender, we saw a swallow skimming along the 

 edge of the cliff, catching the flies which the warm sun had enticed 

 from the crevices of the rocks. Shortly afterwards it flew just over 

 my head while among the houses of the village. Drs. Noyes and 

 Hereford, who have each spent more than ten years on the island, 

 assured me that a swallow was unknown there, but later in the 

 evening I had the opportunity of showing them the bird on another 

 part of the cliff ; it remained about the village for nearly two weeks ; 

 on June 4th, while standing on Black bluff, St. Paul, I watched a 

 swallow coming into the land and then fly northward up the island ; 

 I found a nest at Unalaska, on August 13th, containing three large 

 young, a male and two females and secured the adults also ; the nest 

 is of mud held together by grass rootlets; it is nine inches wide by 

 four inches deep, the cavity is two and a half inches in diameter and 

 one and three-quarter inches deep ; grass rootlets encircle the cavity, 

 which is well lined with guU and raven feathers; it was built in a 

 large cavity, almost a cave, of a rock on a hillside, and was placed 

 on the slightly sloping face of the back portion, about its centre ; a 

 slight inequality of the rock face was sufficient to hold it in place; 

 to enter the cavity the birds had to fly to the face of the rock and 

 then dip downward between the rock and many tall plants, which 

 effectually hid the opening; I saw no others. {Palmer.) 



CCXLIL IRIDOPROCNE COUES. 1878. 



614. Tree Swallow. 



Iridoprocne bicolor (Vieill.) Coues. 1878. 



Common at Big island in the Koaksoak river near Fort Chimo 

 where it breeds abundantly; abundant throughout the northern 

 portions of Labrador. {Packard.) A very common summer 

 migrant at Cow Head, Newfoundland. {Reeks.) A common sum- 

 mer resident at Halifax, N.S. {Downs.) Common in Nova Scotia 

 from April 20th to September. {H. F. Tufts.) A common summer 

 resident at Sydney, Cape Breton, island. (C. R. Harte.) Rather 



