THE WARBLER FAMILY 5k 
good deal of a gray silky stuff which gives it a 
beautiful look. 
This bird is one of the few who will not bring 
up a cowbird baby. When the tiny mother finds 
a cowbird’s egg in her nest, she builds another 
story on top of the nest, leaving the egg to spoil. 
Sometimes a cowbird finds the second nest, and 
then the warbler adds a third story. Nests have 
been found three stories high, with a dried-up 
cowbird egg in each of the two lower stories. 
A strange thing happened once to a pair of 
yellow warblers. When the nest was done and 
the eggs laid, a storm threw it out of place, and 
tipped it over to one side, so that the little 
mother did not dare trust it fora cradle. So she 
built another nest in the same bush, and went to 
sitting on that. 
One day a bird-lover chanced to see the two 
nests, one with the bird sitting, the other tipped 
partly over and left with the eggs still in it. 
To see what the birds would do, he put the 
fallen nest back in place, and made it firm, and 
then went away. The little pair looked at the 
nest, and had a great deal of chatter over it. 
It was their own nest and their own eggs, but 
the mother could not sit in two places. 
Finally, the singer took his place on the re- 
stored nest. After that it was watched, and the 
