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THE NEST AND EGGS OF THE OLIVE WARBLER 

 {DENDROICA OLIVACEA). 



BY WILLIAM W. PRICE. 



The Olive Warbler, Defidroica olivacea (Giraud), is not un- 

 common in the higher pine-covered mountains of southern Arizona. 

 I met with it during the summer of 1894, in the Huachuca, 

 Chiricahua, Graham, and White Mountains. 



My first observation of this species was made on May 22, in 

 the Huachuca Mountains. I was on a ridge at nine thousand 

 feet elevation, in open pine woods, studying a colony of Violet- 

 green Swallows, which had nests in some dead trees. Suddenly an 

 Audubon's Warbler, a male in full spring plumage, darted by me, 

 closely pursued by a smaller orange-headed bird. Just as they 

 had passed me, the smaller bird, which proved to be an adult 

 male Olive Warbler, alighted on a low pine branch and uttered a 

 low, short song. I secured it, and to my delight, held in my hand 

 the first male Olive Warbler I had ever seen. Later in the day, 

 in open pine woods at about the same elevation, I obtained 

 another adult male from among low pine branches, where it was 

 busily searching after insects. On this occasion, I saw no females, 

 and I had reason to believe that with this species migration had 

 just begun. 



I next saw the Olive Warbler on June 10, on the summit of the 

 Chiricahua Mountains, at about nine thousand feet. The open 

 pine woods here were very similar to those in the Huachuca 

 Mountains, where I had already taken the bird. On June 14, I 

 secured three specimens, two adult males and a female. The 

 female had evidently laid her set of eggs. I saw several other 

 specimens on that day, all in open woods and all busy searching 

 for insects. 



On June 15, in the Chiricahua Mountains, I noticed a q^air of 

 Olive Warblers apparently at nest-building. The region was a 

 dry open park, thinly set with young pines {Piiiiis jeffreyi), at 

 between nine and ten thousand feet above the sea. I saw a 

 female, closely followed by a male, fly from a bush of spirea 



