Chaetura oelarflca iChltaiiev SwiftJ. On June 8th we heal’d 
a Swift 1 . the chimney of the old cabin# On the 16th, 23rd, 
29th and 30th of this month, tvro birds spent at least a 
portion of the day as well as the entire night in this chlai- 
ney. No doubt they were there during the intervening days, 
also, but I was either at Tiancaster or, if at the cabin, 
did not have an opportunity to observe them closely. 
On the morning of July 1st, I examined the chimney 
carefully. It Is about 16 feet in height with an almost 
perfectly straight 14 inch flue, lined, rather smoothly with 
troweled mortar. From the fireplace in the lower cabin, 
which opens directly into It, one can see every art of 
the Interior, The Swifts were clinging side by side to the 
middle of the face of the north wall, ixit there was not the 
slightest trace of a nest to be seen anywhere* 
I spent the following week at Lancaster, returning 
to Ball*s Hill on July 8, The Swifts had built a nest 
during the interim, attaching it to ne'^rly the snme spot 
where they were clinging on the 1st, Apparently the nest 
was still unfinished for we could sef through it in nany 
places, Hor did they do anything to amou*it to anything 
in the way of adding to the structure during the next seven 
days. 
On the 8th, 9th, 10th, 11th end 13th, one or both 
of them spent more or less time in the chimney by day, and 
on several of these days they were there together, through 
the greater part of the day, sitting side by side iji the 
nest, apparently doing nothing but rest and preen their 
% 
feathers. During most of this period the weather was cool 
