368 Rathbun, Birds of Crescent Lake, Wash. [oct. 



was heard in the tall timber along the entire lake and up the mountain 

 sides as far as we ascended, although it appeared to be more abundant 

 from lake level up to about 1800 feet elevation. Climatic conditions had 

 no effect on its tendency to song which was heard intermittently during 

 the entire day, but owing to the habit of confining itself to the tops of the 

 tall coniferous trees, it was difficult to locate the birds. On a few occasions 

 early in the morning, individuals of both sexes were found in the low growth 

 around and in the small clearings, and a female collected May 22, on dis- 

 section showed that oviposition would soon begin. The first arrival was 

 noted April 26, the next the following daj', and on the 30th the species was 

 quite common throughout the region. 



67. Dendroica occidentalis. Hermit Warbler. — The song of this 

 warbler was heard occasionally in May, June and July and by patient 

 watching one might obtain a glimpse of the bird high up in the evergreen 

 forest. 



68. Seiurus noveboracensis notabilis. Grinnell's Water-Thrush. 

 — On May 26 in the lower lake section, this bird was heard singing at 

 intervals for the space of nearly a half hour, during which time it re- 

 stricted itself to a limited area along the rocky and boulder strewn shore, 

 here overgrown with a tangle of deciduous shrubs. The song of the species 

 was also heard at one other subsequent time. 



69. Oporornis tolmiei. MacGillivray's Warbler. — Not uncom- 

 mon, particularly in the section about the lower lake. The first arrival 

 was noted May 21 and the species heard each day up to the 24th, on 

 which date it became common as evidenced by its song. In migration it 

 apparently took three days to travel the entire length of the lake. 



70. Wilsonia" pusilla chryseola. Golden Pileolated Warbler. — 

 Was first heard and .seen April 28 and by May 1 had become common; 

 particularly so from the narrows to the head of the lake, being found mostly 

 in the deciduous growth along and near the shore, although several times 

 at an elevation of 1000 feet here restricted to the small partially open spots 

 likewise having a similar growth. Next to D. townsendi the most abun- 

 dant of the Mniotiltidse and as common as we have ever seen the species 

 in any part of its habitat with which we are acquainted. 



71. Cinclus mexicanus unicolor. Dipper. — ^ From April to July 

 although seen at times about the lake, at this period it was quite common 

 along the mountain streams. In October however, we found it often in 

 the former locality. 



72. Thryomanes bewicki calophonus. Seattle Wren. — In the 

 more open section about the lower part of the lake, this species was heard 

 singing on two different occasions in May. 



73. Troglodytes aedon parkmani. Western House Wren. — One 

 record only. May 2, 1916, on which date a single bird was seen and heard 

 singing in a small clearing in the upper lake section. 



74. Nannus hiemalis pacificus. Western Winter Wren. — Com- 

 mon. This was one of the few species found quite evenly distributed 



