Vol. XVIII 

 igoi 



\ KiRKWO<jD, Cerulean Warbler in Maryland. ^4^ 



under the branches proper of the high trees. Here it also to a 

 considerable extent does its hunting.. Its song is so distinctive 

 that after being once recognized it can never be confused with 

 that of any other bird. Although recognizing the impossibility of 

 portraying bird songs, I venture on the following which, however, is 



— AAA AAA- - - - 



we ch ch ch ch we je je je 



not very satisfactory. It also gives its song in a low tone as if it 

 whispered it, and unless the bird is carefully watched the observer 

 might be led to believe that he heard a second bird singing in the 

 distance. I have watched a bird sing thus between each regular 

 song, at other times it would not give it at all, or only occasionally, 

 while on two or three occasions I heard it given for quite a while 

 to the exclusion of the regular song, and quite often have heard 

 it given two or three or even more times in succession between 

 regular songs. 



The nest found on June i8, 1899, could not at that time be 

 definitely stated to be a Cerulean's, as only the Redstart that 

 demolished it was seen at it. It was, however, an exact counter- 

 part of the nest collected on June 10, 1900. This latter nest 

 contained four eggs, very slightly incubated. Their ground color 

 is a pale grayish with a slight bluish cast, marked with pale red- 

 dish specks and spots, nearly all being on the larger end. One 

 egg, however, has also some fairly large blotches of a much lighter 

 reddish round the girth. Underlying this on the larger ends of 

 all are lilac spots of different shades. 



The nest is made of brown bark fibre, with some fine grass 

 stems among it, and is finished inside with a few black horse- 

 hairs. Outside it is finished with gray shreds of bark, spider 

 web, and a few small fragments of newspaper that had been water- 

 soaked. It measured, inside 1% inches across by i inch deep ; 

 outside 2. J inches across. As the branch sloped, one part of the 

 rim is within f of an inch of it, while the opposite part is if inches 

 above it, the material comes down on one side of branch to 2^ 

 inches below the rim. On this side a tiny twig arches out from 

 branch and extending to the rim is imbedded in the nest, and the 

 leaves which grew from its top shaded the nest. On the other 

 side the material merely came down to the branch, which meas- 



