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 Nov., x9ox. [ THE CONDOR 77 lined almost entirely with soap-root fiber, which appears to be the usual material employed. This nest and its situation is shown in the accompanying cut. On June xo, x9o at Slippery Ford a nest was found built among an accumulation of dry black oak leaves beneath a deer-brush on the side of a gulch. It contained five egg% two-thirds advanced in incubation at this date. As is shown by the above nesting records, five eggs constitute the usual set and the eggs are laid from May 2o into June, according to altitude. This warbler was observed com- monly at Echo, where the hillsides echoed with its song. [Rather common at Glen Alpine in the thickets of Ueanolhus cordulalus and on the slopes of git. Tallac to at least 8o00 feet. While the female is usually seen in shrubbery near the ground the male is more often seen and heard singing in trees tf considerable size. W.W.P.] Itelminth0phila celata lutescerts. Lutescent Warbler. One specimen shot at Fyffe in June, r897, but I should consider it an irregular summer visitant in the region. Mr. Taylor sent me two females shot near Glen Alpine Springs on September t7 and 8, 9ot, doubtless migrants. [Rather common in the willows and tamarack pines in Glen Alpine and on Silver Creek to at least 8oov feet in July and August. I have no evidence that it breeds. W.W.P.] Denclr0ica e3tiva. Yellow Warbler. At Fyffe this species occurs commonly, ningling with the other warblers in the black oaks. On June x6, 898, while crawling through a patch of deer-brush in search of thick-billed sparrows' nests, I noticed a small nest three feet up in the top of a bush and it was presently claimed by a yellow warbler. The contents were txvo advanced and one infer- tile egg. The nest was composed of the usual grayish plant material and did not differ from nests found in the valley. Personally I have not observed this species above Fyffe. Denclr0ica auclub0ni. Audubon Warbler. A fairly common species at Fyffe ,nd upward to the summit. It vies with the hermit warbler in keepinclose to the conifers, and the male in breeding plumage is a bird of rare beauty. All the nests I have found have been at comparatively low elevations in the trees, but the birds are frequently seen high up iu the tall pines and firs, where it is likely that many of them nest. Audubon warbler, although not nominally a bird of the Transition zone, was observed most commonly at about 3,5oo feet altitude below Fyffe where a dense growth of cedars had sprung up after a forest fire. This seemed the center of abundance and a number of pair were nesting within a small area. June 5, t897, I found a nest 4x feet up in a small cedar sapling, built next to the trunk. It contained a single egg and had evidently been de- serted. The nest was generously lined with feathers, prominent among which were several of the plumed quail. On June 5, 9 oo at 3,5oo feet altitude a nest was found 2o feet up on a drooping pine limb, containing full-fledged young. The parent birds showed the direst distress, dragging themselves about on the ground in their attempts to mislead us. At the Forni meadow, altitude 7,5oo feet, on June to, 9oo I found a nest x5 feet up on a horizontal limb of a red fir, contain- ing four fresh eggs. The outside of the nest was composed of plant stems, the inner sectionofbark strips and grass, with a lining of horsehair and feathers. The eggs were heavily marked for this species, being blotched confluently with umber and lilac. The nests of this warbler are larger than those of any of the other Sierra warblers, while the eggs have a distinctive coloration. Dendr0ica nigrescens. Black-throated Gray Warbler. Common about Fyffe and observed as far up as Slippery Ford. Of all the warblers it seems to be the