OKLAHOMA ACADEMY OF SCIENCE 63 



Downy Woodpecker (Dryobates pubcscens). A pair were 

 seen excavating a hole in a dead tree by a small creek March 17, 

 1921 ; 2 days later the tree was cut down. 



*Red-headed Woodpecker (Melanerpes erythrocephalus). One 

 pair were seen enlarging an old woodpecker hole May 12, 1920; 

 one of the birds was seen to leave the nest on June 17. 



*3cissor-tailed Flycatcher (Muscivora forficata). A nest was 

 seen June 17, 1922 at which the parents were feeding the young. 



Kingbird (Tyrannns tyranmis). A nest was found June 17, 

 192a 



Crested Flycatcher (Myiarchus crinitus). A nest v/as found 

 in 1922 in an old flicker hole in a telegraph pole 5 feet from the 

 ground on a busy street. May 25, the nest was in process of con- 

 strurtion ; Tune 8 there were 5 eggs which began to hatch June 18 ; 

 the 4 young left June 30. 



*B!ue Jay (Cyanocitta cristata crisfata). Seven nests found; 

 the earliest record was a nest in process of construction found 

 April 30. 1921 ; it contained 6 eggs on May 9. June 13 a young bird 

 was found that had recently left the nest. 



CroAV (Corvus brarhyrhynchos brachyrhynchos). A nest has 

 been found each year by a creek v/est of town, all the nests being 

 in elms rather near each other. In 1920 4 downy young were in the 

 nest on March 28; on April 24 they had left but 3 were nearby 

 and were not yet expert at flying. The 1921 nest contained one 

 egg on March 9 ; on March 20 there were 6 eggs ; April 4 there 

 were 5 naked, blind young which were well feathered 10 days later. 

 The 1922 nest contained 4 eggs on March 18, but on the 28th was 

 found deserted. One other nest was seen near the Canadian on 

 May 13, a parent bird leaving at our approach. 



*Cowbird (Molothrus ater ater). The birds found parasitized 

 by the cowbird in the last 3 years have been as follows : goldfinch, 

 1 ; cardinal, 1 ; dickcissel, 1 ; Bell vireo, 3 ; yellow warbler, 3 ; and 

 bluebird, 3. In all but 2 cases there was but one cowbird egg in 

 the nest ; in one Bell vireo's nest there were 2 cowbird eggs and no 

 vireo eggs, and in the goldfinch's nest there were 2 eggs of the host 

 and 2 of the parasite. One yellow warbler nest was found to 

 have a cowbird's egg imbedded in its floor, in another nest a young 

 cowbird was found on top of 3 sma'l warblers, while the third 

 pair of j^ellow warblers were feeding a young cowbird recently 

 out of the nest July 11, 1922. A pair of Bell vireos were doing the 

 same thing on the same date, one of their own offspring being 

 found crushed in the bottom of their nest ; the other 2 Bell vireo 

 nests containing cowbird eggs have been found deserted. When- 



