62 THE UNIVERSITY OF OKLAHOMA 



Twenty-four species have been found nesting on the University 

 campus, while 70 per cent (440) of the nests were located there. 

 Annotated Lij:t 



(Species marked with an asterisk (*) have been found nest- 

 ing on the University campus.) 



*Bobwhite (Cnlinus inrginianus) . One nest with 6 eggs found 

 north of town June 17, 1922, evidently deserted. (Mr. Chester 

 Hughes found a nest of this bird on the campus in 1919.) 



^Western Mourning Dove (Zenaidura macroura marginella). 

 One hundred and thirty-five nests were found in 1920, 131 in 1921 

 and 92 in 1922, 358 in the 3 years. Sixty-five of these were known 

 to have succeeded and 90 to have failed. The earliest nest found 

 had its full set of eggs, March 22, 1921 ; two nests were found 

 the last of March in 1920 but none until April in 1922. In 1920 and 

 1921 no young were in the nest later than September 17 and 27 

 respective'y, but in 1919 3 broods were still in their nests on 

 October 1, and in 1922 the last young bird left its nest October 6. 

 No nests were found on the ground during these 3 years, the aver- 

 age height of 240 nests being 13 to 14 feet. Seventeen young doves 

 left the nest of their own accord when 12 to 15 days old, the aver- 

 age age being 13.4 days. One stunted squab in 1922 did not leave 

 until 17 days old.* 



*For a detailed study of the resting of tliese birds on the campus of the 

 University of Oklahoma, see Nice, M. M. Auk, XXXIX, 4, 1922. pp. 

 457-474, and XL 1 1923. pp. 37-58. 



Swainson Hawk (Buteo swainsoni). A nest was found near 

 the Canadian river in 1922; in process of construction, April 26; 3 

 downy j^oung on June 11; young all feathered July 9. On June 11 

 and 25, the parent bird flew away at our approach and was not 

 again seen during our stay, but on July 9, one parent flew about 

 continually, calling and swooping down towards the people climb- 

 ing the tree, 'whi'.e after we had gone some distance away the 

 other parent joined its mate. The beneficial nature of these hawks 

 was evidenced by the remains of a ground squirrel and a rabbit 

 in the nest and by the fact that a pair of Baltimore orioles were 

 nesting in the same cottonwood. 



Florida Barred Owl (Strix varia alleni). One nest found in 

 1920 in a cottonwood near a creek east of town ; it contained 2 eggs 

 April 23 and 2 young May 8 ; the young were still in the nest June 

 6. This hole has not been nested in since then by the owls. 



*Yellow-billed Cuckoo (Coccysus afnericantis americanus). One 

 nest containing 3 eggs was found on the campus June 16, 1920. 



*Hairy Woodpecker (Dryobates villosus). A nest was found 

 on the campus April 3, 1920 ; the young left soon after April 21. 



