618 Wisconsin Academy of Sciences, Arts, and Letters. 
quite similar in situation to those of that bird,—a hollow in a 
stub or tree-trunk usually serving the purpose. Sometimes the 
nests are built in a hollow at the top of a stump standing partly 
in water. The hollow is lined with a thick bed of feathers on 
which the crystal white eggs rest. In number they range from 
five to eight or nine. Hosts containing eggs were found the last 
of May and after the middle of June. Large numbers of these 
birds were often seen, skimming along just above the, rushes of 
sloughs or marshy lakes, searching for their insect food. 
619. Cedar Wax wing. 
Ampelis cedrorum (Vieill.). 
Several of these birds were seen in a strip of small scrubby 
timber on the edge of a lake, but no nests were found. As they 
were seen here both in June and July, there is no doubt, but that 
they were nesting. 
622a. White-rumped Shrike. 
Lanius ludovicianus excubitorides (Swains.) 
The favorite haunt of the Butcher-bird, as the Shrike is often 
called, is a portion of the 1 prairie where there is an abundance 
of low, scrubby trees and shrubbery. It was observed, however, 
scattered over the region generally. The nest, is situated in a 
bush or in the thick branches of a tree not, far from the ground. 
It is a bulky structure, the materials comprising it being twigs, 
grass, weeds and rubbish in general, with a thick lining of feath¬ 
ers. Oh May 21, a nest was found, apparently completed, but 
it contained no eggs. It was built in a bush-willow near a trail. 
Oh July 3 a pair of Shrikes were seen feeding four young which 
had left the nest but were not quite able to fly. 
624. Bed-eyed Vireo. 
Vireo olivaceous (Linn.). 
On June 17, a, nest was found and a Vireo slipped off and 
flew away when closely approached. Although it was probably 
a Bed-eyed Vireo, it is not certain as the bird was not secured. 
The nest was a beautiful little cup-shaped structure woven of 
