284 



ZOOLOGY— BIRDS, 



their course to the far north. By the last of May, nearly all had disappeared 

 from the low grounds ; and such stragglers as remained were lost sight 

 of a few days later, doubtless finding in the mountains adjacent all the 

 conditions necessary for their summer existence. As an abundant summer 

 resident of the mountains of Colorado, it has been found by Messrs. Allen 

 and Trippe ranging from about 8,000 feet to the timber line. In the mount- 

 ains of New Mexico and Ai-izona it has not been found by any of the 

 expeditions in summer, nor do I think it occurs there. 



In fall, they occur, if possible, even more abundantly than during the 

 vernal passage ; their numbers reaching the maximum in Arizona in Septem- 

 ber, at which time they are found from an altitude of 10,000 feet in the 

 shi-ubbery and weeds along the alpine streams to the lowest valleys. 



Among the hordes of spaiTows found along the Gila River the middle 

 of September, no one species compared in its abundance with this finch. 

 The tall weeds and undergrowth seemed to be alive with these birds, dozens 

 of which would be scared up at every step, and alight on the neighboring 

 trees. They spend all their time on the ground, searching for the small 

 seeds and insects which constitute their food. When undisturbed, they are 

 perfectly silent, but occasionally, when startled, emit a sharp chirp. 



Locality. 



Wing. 



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 <J?jun. 

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 9 ad. 

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 S ad. 

 9 



9 



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9 



Grass Valley, Utah . 

 do 



Fort Garland, Colo . 

 Gila River, Ariz ... 



do 



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Sept. 10, 1872 

 Sept. 14, 1872 

 May 7, 1873 

 May 14, 1873 



do 



May 15, 1873 

 May 17, 1873 



do 



do 



May 25, 1873 

 Sept. II, 1873 

 Sept. IS, 1873 



do 



do 



do 



H. W. Ilenshaw 

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2.41 

 2. 52 

 2-57 

 2.25 

 2.48 

 2.64 

 2.23 



2.45 



2- 35 

 2-54 

 2-57 

 2-37 

 2.47 



2.46 



2.57 

 2.65 



2-33 

 2.48 

 2.67 

 2.26 

 2.50 

 2.40 

 2.67 

 2. 70 

 2.47 

 2.65 



0.45 

 0.44 

 0.45 

 0.45 

 0.45 

 0.45 

 0.44 

 0.49 

 0.48 

 0.45 

 0-43 

 0.43 

 0.48 



0.79 

 0.81 

 0.80 

 0.75 

 0.83 

 0.82 



0-73 

 0.79 

 o. 76 

 0.77 

 0.75 

 0.75 

 0.84 



