620 Wisconsin Academy of Sciences , Arts, and Letters. 
amusing appearance. These birds are peculiar in tbeir nesting 
habits in that one pair of birds construct five or six nests and 
use only one. These nests are located in close proximity to each 
other ami resemble each other in every respect except that the one 
containing the eggs is the only one lined. The nest is an almost 
round, hollow ball, closely woven of dry grass, with a little wil¬ 
low-down intermingled. The hollow is usually lined with wil¬ 
low-down. Grass or rushes growing in water are woven into 
the sides of the nest and support it a few inches above the water 
of the marsh or slough. One nest measured four and three- 
fourths inches outside diameter, and six inches outside depth. 
The entrance, so small as to almost escape observation, was situ¬ 
ated in the side considerably nearer the topi than the bottom. 
On June 20 a nest containing six eggs slightly incubated was 
found. The eggs are heavily marked over the entire surface 
with chocolate brown, giving them a very dark appearance. 
Eggs measure: .63x.50 ; .66x.51; and, .67x/51. 
761. American Robin. 
Merida migratoria (Linn.). 
Though not as common as farther south, the Robin is present 
in considerable numbers. The first nest was found on May 19, 
and contained one egg. It was built in a willow only two feet 
from the ground. 
Nothing of special interest was noted in regard to its habits. 
English Sparrow. 
Passer domesticus (Linn.). 
This little pest has wandered to the Saskatchewan region, but 
does not yet exist in such large numbers as to be the nuisance 
that it is farther south. 
