. An account of the birds and mammals of the San Jacinto area of southern California with remarks upon the behavior of geographic races on the margins of their habitats . ■HHH. PLATE in Fig. 1. Portion of mesa at 3500 feet altitude near Dos Palmos Springon the desert slope of the Santa Rosa Mountains close to the upperedge of the Lower Sonoran Zone; photograph taken May 27, 1908. In thebackground, on the shaded slopes, are such Upper Sonoran shrubs asjuniper, Rhamnus, scrub-oak, and with them such birds as Aphelocoma , Thryomanes h. charienturus, and Pipilo c. senicula. In the for
. An account of the birds and mammals of the San Jacinto area of southern California with remarks upon the behavior of geographic races on the margins of their habitats . ■HHH. PLATE in Fig. 1. Portion of mesa at 3500 feet altitude near Dos Palmos Springon the desert slope of the Santa Rosa Mountains close to the upperedge of the Lower Sonoran Zone; photograph taken May 27, 1908. In thebackground, on the shaded slopes, are such Upper Sonoran shrubs asjuniper, Rhamnus, scrub-oak, and with them such birds as Aphelocoma , Thryomanes h. charienturus, and Pipilo c. senicula. In the foreground Lower Sonoran vegetation predominates, with such birds asAmphispiza b. deserticola, and Heleodytes b. couesi. Crossing this exact place was the lii f trap-- which produced in a single night -May 30, ;?1) the following mammals: Perodipus a. agilis, Dipodomys m. simiolus,Neotoma i. desertorum, Perognathus p. bangsi, Perognathus /. pallidum,Peromyscus <. eremicus, Ammospermophilus I. leucurus, and Notiosorex crawfordi. other mammals taken in the vicinity were Sylvilagus b. cineras-cens and Peromyscus b. rowleyi, thus showing the peculiar zonal overlap-ping at th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, booksubjectmam
