Congdon—Saskatchewan Birds. 
607 
more, and their peculiar cries, uttered while sailing through 
the air, are frequently heard. Occasionally one will swoop 
dow T n towards the earth and rise up again, describing in its 
course an arc of a circle. The peculiar booming sound which is 
heard seems to' come from the wings. 
The Highthawk builds no nest, but lavs its two eggs on the 
bare ground,—sometimes' on the open prairie and sometimes in 
the edge of woods. 
428. Ruby-Throated Hummingbird. 
Trochilus colubris (Linn.). 
A pair of these birds was seen at Crooked Lake and another 
pair was seen at different times near Water-hen Lake. Ho 
nest was found. 
444. Kingbird. 
Tyramms tyrannus (Linn.). 
The Kingbird was very common especially in the low prairie 
districts where there are numerous sloughs surrounded by a 
fringe of bush willows. In such localities there is an abundance 
of insect food and this, no doubt, is a great attraction for this 
flycatcher. 
The nest is built in trees or bushes, not far from the ground. 
A nest found on Tune 27 was situated in a willow bush growing 
in the edge of a slough where the water was a foot deep. The 
nest was fastened to the twigs, which were woven into the walls 
of the structure. The height of the nest above water was four 
feet. The nest measured four and one-half inches outside diam¬ 
eter, three inches inside diameter, four and one-fourth inches 
outside depth and two> inches inside depth. It was closely 
woven of grasses with a lining of finer grasses and a little down 
from the willows. 
Three eggs, taken from the nest described, measure .7Ox.90; 
.69x90; .71x93. 
