DESCRIPTION OF CAMPS. 355 



portion of the day could be found only in pockets of the rocks, the 

 bed of the stream, or cool nooks completely shaded by overhanging 

 bushes. Bordering this stream, in its entii'e extent, the vegetation was lux- 

 uriant, compared to that of other sections, the shrubbery consisting princi- 

 pally of a thick growth of a small cornel {Cornus pubescens), from six to ten 

 feet high, often canopied by the trailing stems and delicate foliage of a 

 species of Clematis. There were also clumps of wild roses and a few willows, 

 interspersed at intervals with patches of elder [Samhucns glaucct) and thickets 

 of choke-cherries {Prumis andersoni and P. virginiamis). No woods were in 

 sight, but on the slopes of the canon were small, scattered cedars [Junipcrm 

 occidentalis), while a few isolated small aspens were distributed far apart 

 along the stream. During midday the water of the brook being confined to 

 small pools where shaded by the overhanging shrubbery, or in " pockets " 

 of the rocks in the bed of the stream, the birds resorted to these little 

 reservoirs to refresh themselves in the shade of the thickets or by bathing in 

 the cool water. The characteristic birds of this canon were Woodhouse's 

 Jay {Cyanocitta tvoodhousii), Little Titmouse (Psaltriparus plumheus), and 

 Swainson's Vireo ( Vireosylvia swainsoni). Besides these, the following species 

 were found : Salpindes ohsolekis, Icferia hngicaitda, Mijiodioctes pusillus, 

 Amphispiza hUineata, Pipilo cMoriirus, Troglodytes parkmanni, Zonotrichia inter- 

 media, Eedymeles melanocephalus, Lanivireo cassini, Geothlypis macgillivrayi,- 

 Pica hudsonica, Ectopistes migratoria (!), and Sayornis sayus. The most abun- 

 dant birds of the locality were the Psaltriparus, Vireosylvia, Mylodiocfes, 

 and Zonotrichia, above mentioned, the specimen of Ectopistes being the 

 only one observed during the entire exploration. 



23. Biiena Vista Canon, West Humboldt Mountains (September 17- 

 October 23. Altitude, 5,169 feet). — The general aspect of this locality was 

 that of Wright's Oanon, on the opposite side of the range, except that its 

 stream was constant and much larger, with a wider extent of level land 

 on each side, and correspondingly more extensive shrubbery, which, at the 

 same time, was more vigorous and varied. This consisted chiefly of a 

 thick growth of buffalo-berry bushes, willows, and wild-rose briers in the 

 lower portion of the canon, and higher up of choke-cherry and rose bushes, 

 mixed with extensive copses of small aspens. The slopes on each side 



