. An account of the mammals and birds of the lower Colorado Valley : with especial reference to the distributional problems presented . <•- ,. Fig. PLATE 7 Fig. 8. The salt-bush association, on second-bottom above the reach ofthe highest overflow. The large plant in the center of the picture is thecreosote bush (Larrea divarxcata) which in places invades the second bottomnearly or quite to the edge of the mesquite and grows to larger size in suchplaces than on the desert mesa. The prevailing low, light-colored shrub, isthe salt-bush (Atriplex polycarpa). Winter visiting birds of this associ
. An account of the mammals and birds of the lower Colorado Valley : with especial reference to the distributional problems presented . <•- ,. Fig. PLATE 7 Fig. 8. The salt-bush association, on second-bottom above the reach ofthe highest overflow. The large plant in the center of the picture is thecreosote bush (Larrea divarxcata) which in places invades the second bottomnearly or quite to the edge of the mesquite and grows to larger size in suchplaces than on the desert mesa. The prevailing low, light-colored shrub, isthe salt-bush (Atriplex polycarpa). Winter visiting birds of this associationwere: Nevada sage sparrow, Brewer sparrow and desert Bewick wren; mammalscaught at this point were Dipodomys merriami and Perognathus taken one mile above Mellen, Arizona, February 27, 1910. Fig. 9. Tj-pical wash association, the catclaw {Acacia gregyii) being theplant most constantly present. Thickets of catclaw are to be seen in the rightforeground, while large ironwood and palo verde trees are to be seen in themiddle distance. The distant hill slopes are dotted with creosote bushes, whileAtriplex polycarpa m
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbirds, booksubjectmam
