72 BULLETIN 19 i, UNITED STATES NATIONAL MUSEUM 



"who pronounced five of them typical Cyanocitta stelleri annectens, and 

 two nearly typical Cyanocitta stelleri, and four intermediate between 

 these two forms." 



I cannot find that the black-headed jay differs materially in its haunts 

 or in any of its habits from other races of the species. J. A. Munro, 

 who has sent me some notes on it, says that in British Columbia it 

 breeds in the Canadian Zone above 3,500 feet and comes down to the 

 lake region in October, remaining until May. Seldom more than three 

 or four are seen in a day's walk. There is apparently a limited migra- 

 tion from the northern part of its range, both southward and eastward, 

 perhaps nearly or quite to the coast. He has heard it give the tremolo 

 call of the loon and a perfect imitation of the redtail's scream, as well 

 as the call of the raven. He says that black-headed jays were common 

 all through the winter of 1921-22 about Okanagan Landing, wintering 

 in the shore brush and coming to the kitchen door for scraps that were 

 thrown out. He says that they are very curious and come readily to the 

 pygmy-owl call. 



The eggs are indistinguishable from those of other races of the 

 species. The measurements of six eggs in the United States National 

 Museum average 30.7 by 22.0 millimeters; the eggs showing the four 

 extremes measure 31.8 by 21.6, 30.3 by 23.1, 29.5 by 21.6, and 31.3 by 

 21.1 millimeters. 



CYANOCITTA STELLERI DIADEMATA (Bonaparte) 



LONG-CRESTED JAY 



Plate 13 



HABITS 



The long-crested jay is the representative of the species that is found 

 in the southern Rocky Mountain region, from southern Wyoming and 

 Utah southward throughout a large part of Mexico. It is described by 

 Ridgway (1904) as "similar to C. s. annecteiis, but lighter colored, 

 with white superciliary patch much larger (or else purer white), fore- 

 head more conspicuously streaked with bluish white, greater wing- 

 coverts distinctly barred with black, and the deep black crest very 

 strongly contrasted with the clear brownish gray (nearly mouse gray) 

 of the back and scapulars ; rump, upper tail-coverts, and under parts of 

 body light glaucous-blue." 



Coues (1871) pays the following tribute to the long crest of this 

 jay, from which it derives its name: 



The imposing crest of this jay merits more than a passing allusion. * * * It 

 grows to be two inches and a half long, and is composed of many slender feathers 

 with loosened barbs. The longest ones grow from the crown, while shorter ones 



