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xo8 THE CONDOR ] Vol. II a detour of the meadow and striking a "hog-b?ck" which ran in nearly a straight line to the stunmir, although we had to clamber at intervals over snow and boulders. Just as we were leaving camp I collected a specimen of Audu- btm's Warbler, which lodged in the thick foliage of a red fir, and in trying to dislodge it I saw the nest, fifteen feet which was made necessary by the light air. At 9,000 feet we made a photograph of .the climb that lay before us and the result is presented in plate III. At this elevation the conifers were becoming noticeably dwarfed and there was an entire absence of underbrush, as shown in the plate. while bird life was rapidly diminishing. Mr. Atkinson noted a nest Pltoio by Barlo?t' PLATE III. CLIMBING PYRAMID PEAK. View at 9000 leer altitude, with peak in distance. The effect oJ the altitude on the timber is here shown. up, on a drooping limb of the tree. But a few moments were Iost in reach- ing it and I beheld a handsome set of four eggs of this w?rbler, heavily blotched about the large ends. The nest was lined with feathers--a charac- teristic of this bird's nest building. We continued on cur climb, traveling slowly-up the steep mountain side, of the Red-shafted Flicker (Colafiles caret) at 9.200 feet, in a pine stub, con- taining six eggs, and a nest of the Mountain Bluebird, also in a stub, con- taining a single egg. At 9,o0o feet the red firs disappear and are replaced by hemlocks and by the stunted pine men- tioned, the latter extending up to within perhaps a mile of the summit, growing