Congdon—Saskatchewan Birds. 
601 
on the sloping bank of the Saskatchewan River, while still another 
was perched on the very top of a poplar stub, on an island in the 
same river. The stub holding the last nest had no limbs what¬ 
ever, the nest resting on the upper part of the stub where the 
tree-trunk had broken. Most of the nests were situated at a 
height of from thirty to forty feet from the ground. One was 
forty-five feet up, while another was only fifteen feet from the 
ground. The nest is large, measuring from thirty to thirty-six 
inches, outside diameter, and from eighteen to twenty-four 
inches outside depth. The depression which holds the eggs is 
shallow, several nests showing measurements of from seven to 
ten inches diameter, inside; and from three to three and three- 
fourths inches depth, inside. The materials used in the construc¬ 
tion of the nests observed were, mainly, sticks and twigs, with 
occasional pieces of bark, sod or a few leaves. The hollow is 
lined with shreds and bits of bark, a few small twigs and some¬ 
times a little grass. Most of the nests had a few twigs of poplar 
with buds or green leaves scattered about the rim of the nest. 
In this region the eggs are laid during the: first week or two 
of Mlay. Several sets taken the last week of May were far ad¬ 
vanced in incubation. On Mlay 27, a nest; was found containing 
two, yellowish, downy young, two or three days old. T'wo seems 
to be the number of eggs most commonly laid, for, of the ten 
nests observed, seven contained two eggs, one contained two 
young birds, and the remaining two contained one egg each. 
The two single eggs were far advanced in incubation. 
The eggs of Krider’s Hawk vary greatly in appearance. 
The ground color is a pale bluish-white. Some of the eggs are 
entirely unmarked, while on others the shell is so crowded with 
splashes and blotches as to almost obscure the ground color. 
Eggs range all the way between these extremes, though the ma¬ 
jority seem to be not heavily marked. The markings are gen¬ 
erally some shade of brown. Some of the specimens are 
rather evenly spotted, while others look as though the color 
had been unevenly daubed on with a brush. On some of the 
eggs the markings are clouded and splashed. Elven in the same 
set, the eggs frequently differ widely. One may be entirely un¬ 
marked, and the other spotted and streaked; or, one may be 
much more heavily marked than the other, the markings in one, 
perhaps, clustering about the smaller end and in the other 
about the larger. A few specimens show faint markings of light 
