17fi 



ZOOLOGY— BIltDS. 



This diminutive species has been found abundant at all seasons in 

 every section visited by the survey. In summer, it is rather exclusively 

 pinicoline, ranging upward to the variable pine limit. I have found it as 

 numerous at 10,000 feet as at lower altitudes. In 1873, by June 12, in 

 Southern Colorado, I noticed the old birds flying about the high pine stubs, 

 with food in their bills for the young. In the pines of Mount Graham, 

 Arizona, during the first days of August, young and old were common; the 

 former still dependent upon the care of the parent birds. I have, therefore, 

 no doubt that two broods are reared in a season. Their habits are 

 eminently social, even during the breeding season ; it not being unusual to 

 find several associated with the Titmice and Warblers, the whole band 

 apparently being on the best of terms with each other. As fall approaches 

 these little bands are augmented continually till their number often reaches 

 tin' hundreds, and the trees seem fairly alive with the merry party, while 

 the loud, querulous weet iveet of the Nuthatches, which is constantly repeated 

 as they move along the branches, or fly from tree to tree, is always conspicu- 

 ous among the softer notes of the Warblers and other species. At this sea- 

 son, it descends from the pine region, and is often seen in the groves of 

 evergreen oaks. 



X... 



Sex. 



Locality. 



Date. 



Collector. 



Wing 



Tail. 



Hill. 



Tarsus. 



J 44 



2*3 

 486 



988 



84 



7/2 

 7*3 

 704 

 839 



3 Z 5 



1025 



1 



£ ad. 

 £ ad. 



£ ad. 

 £ ad. 



$ ad. 

 9jun. 



£ 



£ ad. 



£ 

 9 





Nov. 14, 1871 

 do 













do 



do 











.do 



do 



do 











Mountains near Fort 

 Garland, Colo. 



.do 



June 4, 1S73 



June 6, 1S73 

 July 24, 1S73 



Nov. 5, 1S73 



July 12, 1S74 

 Sept. 21, 1874 



do 



Sept. 22, 1S74 



H. W. Henshaw 

 do 



2.44 

 2-55 



2.62 

 2.58 



2-45 

 2. 50 



2.47 

 2.60 

 2.50 



I.5S 



'•57 

 '•55 



i-75 



'•53 

 '•55 



'•55 

 '•54 

 '•47 

 1.56 



1.45 



0. 56 



0.54 

 0.55 



0.57 



0. 50 



°-53 

 0.55 

 0. 50 



°-55 

 0.54 

 0.55 



0. 60 



0.54 

 0.57 



0.63 



0. 5S 

 0. 60 

 0. 58 

 0.58 

 0.5S 

 0.60 

 0.59 



Inscription Rock, N. 



Mex. 

 Mountains at the source 



of Gila River. 

 Willow Spring, Ariz. .. 

 Mount Graham, Ariz.. 



do 



do 



do 



do 



do 



do 



I. M. Rutter 



11. W. Henshaw 



C. E. Aiken 





do 



cfjun. 

 £ 



Huerfano River, N. Mex 

 Camp Apache, Ariz 



Oct. 7, 1S74 

 Nov. — , 1S74 



H. W. Henshaw 



