2 2D Stephens on Birds of Arizona and Sonora. [ July 



teus), mesquit, palo-fierro trees, and a general assortment of 

 smaller cactuses. In this semi-forest growth were several charac- 

 teristic desert species, such as Colaptes c/i?ysoides, Cenhirus 

 uropygialis, Ca?npylorhynchus brunneicapillns ', and Amphi- 

 spiza bilineata. Further along this tree and cactus growth disap- 

 peared, leaving a plain only very sparsely covered with grass, 

 where birds were nearly absent except some Calamospiza bicolor, 

 then migrating. Nearly all these were males in the black and 

 white breeding plumage ; but they had nearly all changed to the 

 winter plumage by our return some three weeks later. On a 

 solitary little mesquit tree in the plain I saw a Hawk, and on 

 approaching to see what the species was I observed a large nest in 

 the same tree. Finding the Hawk not wild I killed it. It proved 

 to be a young Buteo sivainsoni, and was probably reared in the 

 tree where it was killed. At our night camp I shot a Callipepla 

 squamata. The next day we drove west of south over a narrow- 

 ing part of the plain. In places there was a fair growth of grass, 

 and again more or less brush, but almost no cactuses. In the 

 morning we watered the horses at a well one hundred and eighty- 

 six feet deep, paying ten cents per horse. A heavy rain appeared 

 to be falling to the south, which we were glad to see, as it insured 

 us water for our night camp. Peuccea cassini was common and 

 I heard one P. arizonce. 



On the morning of the 9th I heard Callipepla squamata 

 ahead, and started on in advance of the wagon, but failed to get 

 any. Shot three Peuccea arizonce, and saw several Otocorys. 

 After walking three or four miles I waited for the wagon, which 

 had not come on as soon as I expected. While waiting I heard a 

 faint bob-white back along the road, and started back in a hurry. 

 After looking and listening for a mile or so along the road I saw 

 and shot a Callipepla squamata. Thinking I might have mis- 

 taken the cu-en of this species for the other call, I gave up fur- 

 ther search and went to where Mr. Pringle and his assistant were 

 collecting plants. We soon drove on, but before we had gone a 

 quarter of a mile a Partridge ran behind a bush, and I knew that 

 a bird new to me was before me. As I jumped out of the wagon 

 it ran on to the next bush. I flushed it from behind the cover but 

 missed the bird as it flew away. I marked it down among some 

 bunches of sacaton grass, but failed to find it again. It was a 

 much darker bird than I had expected to see, its head being very 



