V ° 1 i907 tIV ] Brooks, A Hybrid Grouse. 167 



in 1905, he saw on July 26 a flock of about forty, both adults and 

 young, all that were collected being young birds; on August 2, all 

 of these birds had disappeared. This exact locality, a sandy point 

 at the western end of the lake, was visited only on the above dates. 

 These birds were undoubtedly migrants, as they were not known 

 to have bred in that vicinity. 



After I had left Saskatchewan, Dr. Bishop visited the breeding 

 grounds of the Marbled Godwits, and on July 3, 1906, found 

 adult birds tolerably common, but they had all departed two days 

 later. At Big Stick Lake, from July 18 to 21, 1906, he saw large 

 flocks of adult Godwits containing hundreds of birds, but on July 

 22 very few were left. He also states that adults reach the North 

 Carolina coast in the middle of July, as he has in his collection 

 adults taken on July 11 and 27, 1904, and that young birds appear 

 about a month later, as he has specimens taken August 10 and 19, 

 1904. 



Evidently the Godwits move off their breeding grounds as soon 

 as the young are able to fly, those birds which have been unsuccess- 

 ful in rearing their young being the first to leave, and forming the 

 vanguard of the early migration in July. Probably most of the 

 adults start on their southward migration before the end of July, 

 and well in advance of the young, the later flight being composed 

 almost entirely of young birds, and moving more deliberately. 



A HYBRID GROUSE, RICHARDSON'S + SHARP-TAIL. 



BY ALLAN BROOKS. 



Plate IV. 



Through the courtesy of Mr. C. deB. Green I have had the 

 privilege of examining a most interesting hybrid between Dend- 

 ragapus o. richardsonii and Pedicecetes p. columbianus, shot at 

 Osoyoos, B. C. 



Roughly speaking this bird may be said to have the coloration 



