OCT., 1900.] BIRDS OF THE YUKON REGION. 89 



50 miles above Circle August 11, and 15 miles lower August 12. 

 The female taken Jul}' 11, which lacked the wax tips on the second- 

 aries, contained an eg-g ready for the shell. The young resemble those 

 of A. cedrorum^ but are grayer, have less white on the abdomen, no 

 pale streaking above, and have the wings, tail, and lower tail- 

 coverts like adult garrulus. The}" lack the cinnamon suffusion of the 

 head of the adult, have only a few black feathers on the throat, a 

 much shorter crest, the wax- like tips of the secondaries peach-blossom 

 pink instead of scarlet, and the lower tail-coverts paler. A still 

 younger bird than the two described is obscurely streaked with whitish 

 both on ])ack and lower parts. On one of the young the wax tips are 

 very small. 



In habits and notes the Bohemian waxwing closely resembles the 

 common cedar waxwing. Two males that we noticed while descending 

 Thirtj^-Mile River were perched on the topmost sprays of tall spruces, 

 uttering a lisping whistle at frequent intervals. One of them flew 

 after a passing insect in the manner of a fl.ycatcher. Flocks were 

 easily approached, and when one bird was shot the rest would scatter, 

 and each would alight on the top branch of some spruce and utter a 

 characteristic call note. This note, which we often heard from pass- 

 ing flocks, was similar to the whistle just mentioned. The birds that 

 we collected had been feeding on the purple berries of some uniden- 

 tified plant. 



142. Helminthophila celata. Orange-crowned \Varl)ler. 



Osgood took an adult male at Caribou Crossing June 26; I a female 

 and two young 20 miles below Fort Selkirk July 27, and a young near 

 Dawson August 2. Osgood secured an adult and one 3'oung at Camp 

 Davidson August 5 and 6, and I saw one young 15 miles above Fort 

 Yukon August 21. All taken were in alders or willows close to the 

 water. 



143. Helminthophila celata lutescens. Lutescent Warbler. 

 Common at Haines, where we took five June 1 and 2. 



144. Helminthophila peregrina. Tennessee Warbler, 



Found only at Caribou Crossing, where I heard four males singing 

 and secured three of them June 25 and 27. They were in compara- 

 tively open swamps of willows and low spruces. 



145. Dendroica aestiva rubiginosa.^ Alaska Yellow Warbler. 



I am positive I often heard the song of this species at Bennett June 

 17-22. I took an adult male at Caribou Crossing June 27, and think 

 I heard the song about Lake Marsh, An adult female was taken by 



lAuk, XIV, 76, 123, 1897. 



