PASSERES HIRUNDINIDAE PROGNE SUBIS. 



213 



hunger. They appear to obtain most of their food from the branches, seiz- 

 ing- the insects when at rest ; but they are abundantly able to take their prey 

 on the wing, and accomplish this much after the style of the Redstarts. 

 Their disposition seems to prompt them to sociability with other species, 

 and occasionally I found them accompanying the Audubon's Warblers, and 

 imitating them in their short flights from tree to tree, occasionally paying 

 flying visits to the fallen logs and even to the ground. Save in being 

 rather louder and harsher, their chirps resemble the notes of the Yellow- 

 rump Warblers. 



FAM. HIRUNDINIDAE: SWALLOWS. 



PROGNE SUBIS, (L.). 

 Purple ITIartiii. 



Jlirwido subis, LINN., Sy st. Nat., 10th ed., 1758, 19U (Hirundo cccrulea canadcnsis, EDWARDS 

 Av., tab. 120, Hudson's Bay). 



Proyne subis, BD., Rev. Am. Birds, i, 1805, 274. COUES, Proc. Acad. Nat. Sci. Phila., 

 1866, 72 (Fort Whipple, Ariz.). STBV., U. S. Geol. Snrv. Terr., 1870, 463. 

 BD., BREW., & RIDG., N. A. Birds, i, 1874, 32!), pi. xvi, f. 10. YAEROW & 

 HENSHAW, Rep. Orn. Specs., 1872, Wheeler's Exped., 1874, 12. HENSHAW, 

 An. Lye. Nat, Hist. N. Y., xi, 1874, 4. Id., An. List Birds Utah, 1872, 

 Wheeler's Exped., 1874, 42. Id., Rep. Orn. Specs., 1873, Wbeeler's Exped., 

 1874, 104. ALLEN, Proc. Bost. Soc. Nat. Hist., June, 1874, 24. 



