. The Auk. Birds. Vol. XXXIVl 1917 J Grinnell, The California Thrasher. 429 Azusa. A noticeable thing in this connection, however, is that, on the desert slopes of the mountains, where Toxostoma lecontei occurs on the desert floor as an associational homologue of T. redivivum in the Lower Sonoran zone, the latter "stays put" far. Figure 1. more closely; that is, it strays but little or not at all below the typical confines of its own zone, namely Upper Sonoran. The writer's field work in the vicinity of Walker Pass, Kern County,. Please note that these images are extracted from scann

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. The Auk. Birds. Vol. XXXIVl 1917 J Grinnell, The California Thrasher. 429 Azusa. A noticeable thing in this connection, however, is that, on the desert slopes of the mountains, where Toxostoma lecontei occurs on the desert floor as an associational homologue of T. redivivum in the Lower Sonoran zone, the latter "stays put" far. Figure 1. more closely; that is, it strays but little or not at all below the typical confines of its own zone, namely Upper Sonoran. The writer's field work in the vicinity of Walker Pass, Kern County,. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original American Ornithologists' Union. Washington, D. C. : American Ornithologists' Union, etc.

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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1884