166 



ZOr)LOGY— BIKIiS. 



rOLIOl'TILA CiERULEA (L.) 

 Illiu'-^i'.iy Gnafcatchcr. 



Motacitla vwruka, LiNN., Syst. Nat., i, 17G6, ;?37. 



Vulicivora acndea, WooDll., Sitgrcave's Exp. Zuni & C'ol. Kiv., 18.11, V,l. 



I'olioptihi mrulcd, 15d., Ives' Col. Exped., 1857-58, pt. iv, fl.— /(/., Hinls N. A., 1858, 

 380.— CouKS, rroc. Acad. Nat. Sci. Phila., lS(ifi, WJ (Fort AVliii)plc).— Di) , 

 U. S. & Mt'X. Uoiiiitl. Surv., ii, pt. ii, 1859, Birds, 13.— Hekkm., 1'. K. 1{. Itcp-i 

 X, pt. iv, 1859, ;?9.— Xantus, Proc. Acad. Nat. Sci. Tliila., 18.V.), 191 (Fort 

 Tcjoii, Cal.).— IlKNKY, Proc. Acad. Nat. Sci. Pliila., 1859, 107 (New Mexico).— 

 Uavd., Trans. Pliilo. Soc. Phila., xii, 18«li, 1G4.— 15d., Kev. Am. Birds, i, 

 1804, 74.— CoorKK, Birds Cal., 1870, 35. — Id., Proc. Cal. Acad., 1870,7.5.— 

 Allen, Bid. .Miis. Coiiip. Zoiil., iii, 1871.', 171 (Eastern Kansas).— Snow, 

 Birds Kan., 187li, 9. — COUES, U. S. Geol. Surv. Terr., Birds Northwest, 

 1S74. 17.— i(/.. Key N. A. Birds, 1872, 78.— Hensiiaw, liep. Orn. S|iecs., 

 1873, ^Vlleel.•r•s Exped., 1874, 99. 



This little bird appears to be sparingly, though quite generally, dis- 

 tributed in New ]\Ioxico and Arizona, where I have f^een it in several 

 localities, though I have never detected the closely allied forms 1'. mclanura 

 and j)liimbca, which are both said to occur in Arizona. The Blue-gruy 

 Gnatcatcher is of a very lively disposition, and keeps so constantly in 

 motion that to ob.serve its habits is a matter of no little difficulty, as it moves 

 rapidly from tree to tree, scanning the foliage and twigs as it passes along 

 with quick, nervous turnings of its head and rapid glancings of its eyes. 

 Thev are also expert fly-catchers, and their flying sallies are frequent and 

 usually successful. They are most often found in the oaks that are scat- 

 tered over the hill sides, or in the scrub of the foot hills, and are not found 

 in the mountains. 



720 

 S98 



50 



«57 

 160 



^jun. 

 S ad. 

 i ad. 

 i ad. 



Locality. 



South of Camp Apache, 

 Ariz. 



San Tedro, .\riz 



Camp Bowie, Ariz 



Aguazul, N. Mcx 



Near Camp Apache, Ari; 

 Arizona 



Sept. 8, 1S73 



Oct. 3. 1873 

 Aug. 8, 1874 

 July 2, 1S74 

 July 19, 1874 

 do 



IL W. Ilenshaw 



Wing. 



1. 91 



2.03 

 1.87 

 1.90 

 2.00 

 2. 10 



2-35 

 2.07 



2.25 

 2.20 



0.40 

 0.40 



0.40 

 0.40 



0.65 



o. 70 

 0.65 



0.68 



0.67 



0.68 



