76 BRIGHT FEATHERS. 
‘“The accompanying illustration was drawn by the writer from this 
compound nest. The upper story or nest is partly lifted so as to show 
the cow blackbird’s eggs in the nest below.” 
‘Fig. 1 shows the cow blackbird’s egg, and Fig. 2 the yellowbird’s 
egg. These are drawn exactly the size of nature.” 
“ Mr. Nuttall was the first naturalist, | believe, to record the obser- 
vation of these two-story nests. Baird mentions a three-story nest, 
each of the lower nests containing the eggs of the cow blackbird, the 
whole structure being seven inches high.”—Sczentzfic American, —V ol., 
xLv1.—No. 11. (New Series,) March 18, 1882, p. 169. 
Another peculiarity of the Summer Warbler is of such an enigmatical 
nature, that I am constrained to give in full the--evidence of Mr. J. A.~ 
Allen, on this point. Not only this bird, but others of entirely different 
genera have exhibited the same mysterious behavior. The similar con- 
duct of the common Robin has been noted, and I have witnessed like 
behavior, in a less degree, in the Cedar, or Cherry Bird. 
Mr. Allen, says: ‘‘ For several weeks the bird (Dendraca estiva) 
has been in the habit of frequently visiting a grape-vine trellis in front 
of a window of the dining-room, from which he has been accustomed to 
sing, wholly undisturbed by the people or the proceedings within the room. 
Although the trellis has been a favorite resort for the bird, his behavior 
was not especially noteworthy till June 7, (1879,) when he began to per- 
sistently-fly against the window-panes, often striking them with consider- 
able violence.” 
‘“ The trellis stands about eighteen inches from the window, and the 
portion immediately in front of it is nearly bare, and consists of two 
horizontal bars, about three feet apart. These form his perch, from 
which he usually makes his dive at the window. Immediately in 
