210 BULLETIN 167, UNITED STATES NATIONAL MUSEUM 



Still another type of nesting was seen on February 15 in Glades 

 County. The nest, containing the usual two eggs, was only 15 feet 

 from the ground in a small live oak at the very edge of a mixed 

 hammock of cabbage palmettos and oaks; it was lined with inner 

 bark and oak leaves. Birds shot in this vicinity are clearly referable 

 to this race. 



Eggs. — Two eggs form the usual set for this hawk, but occasionally 

 three are laid. They are indistinguishal^le from those of alleni^ with 

 surprisingly little average diflference in size. The measurements of 39 

 eggs average 51.8 by 41.5 millimeters; the eggs showing the four 

 extremes measure 57 by 43, 55 by 44.8, 44.5 by 41.2, and 50.3 by 37.5 

 millimeters. 



What has been said about the food habits and behavior of the 

 Florida red-shouldered hawk applies equally well to this smaller race. 

 If anything, the southern Florida birds are tamer, less shy, and more 

 in evidence along the roadsides. Both races are resident in Florida 

 and begin nesting in midwinter. 



BUTEO LINEATUS TEXANUS Bishop 



TEXAS RED-SHOULDERED HAWK 



HABITS 



Based on a series of 16 adults and 6 immature birds collected near 

 Corpus Christi and Brownsville, Tex., Dr. Louis B. Bishop (1912) 

 gave the above name to the red-shouldered hawk of southern Texas, 

 describing it as — 



Similar to Buteo Uneatus clegans, but breast usually more spotted with buffy, 

 the dark shaft lines of chest more conspicuous and the head and back more 

 rufous. * * * These Texas birds are much more richly colored below than 

 fall specimens of B. I. Uneatus from Connecticut, having the chest and breast 

 uniform bright cinnamon rufous and the abdomen, tibiae and lower tail-coverts 

 bright buff heavily barred with cinnamon rufous. They are larger than B. I. 

 alleni from Florida and have the head and neck not grayish but even more rufous 

 than Uneatus. 



Six young birds collected at the same time differ from the description of young 

 B. I. elegans by having the pale spaces on the outer webs of the primaries as 

 large as in B. I. Uneatus. From the latter they differ by having the lower parts, 

 especially the tibiae, more buffy and the dark markings larger — sagittate or 

 cuneiform instead of oval— and numerous even on the tibiae, which are slightly if 

 at all spotted in B. I. Uneatus. Young B. I. alleni is smaller and has less buff in 

 the plumage, and the dark markings below are even heavier than in the Texas 

 race. 



The 1931 A. O. U. check-list gives the range of this race as "central 

 southern Texas south into Tamaulipas, Mexico." Some confusion 

 exists in previous literature; the red-shouldered hawks in different 

 parts of Texas have been referred to as alleni or as elegans by earlier 

 writers. The range of alleni extends into eastern and northern Texas, 



