. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. [No. 33. ^vell-l>oaton runways raniifyin<; throu^rh the tall grass near a creek. Six. seven, and even ei^^ht yoiintj^ were found by Loring in suii^le nests, which were eoniposed of iuie dried grass and ^yove said to resemble the nest of the ovenbird. Bailey found this meadow mouse very abundant in both dry and w^et meadow^s along the Rio Gramle at Del Norte, where it w^as doing slight damage in clover and alfalfa fiehls. At Wray/ in May, 1909, these meadow mice w^n-e feeding extensively upon th
. A biological survey of Colorado. Natural history Colorado; Mammals Colorado; Trees Colorado. [No. 33. ^vell-l>oaton runways raniifyin<; throu^rh the tall grass near a creek. Six. seven, and even ei^^ht yoiintj^ were found by Loring in suii^le nests, which were eoniposed of iuie dried grass and ^yove said to resemble the nest of the ovenbird. Bailey found this meadow mouse very abundant in both dry and w^et meadow^s along the Rio Gramle at Del Norte, where it w^as doing slight damage in clover and alfalfa fiehls. At Wray/ in May, 1909, these meadow mice w^n-e feeding extensively upon the blossoms and leaves of the false Solo- mon's seal {Vagnera steUata), and fragments of the blossoms of a species of Senecio were also found scattered along the Fig. 10.—Distribution in Colorado of Hayden and pygmy field mice {Microtus pauperrimus and J/, ochro- gaster haydcni). In addition to the series mentioned above, the Biological Survey has specimens of 21. modestus from Denver, Loveland, Antonito, and Fort Garland. A specimen in the National Museum is from Twin Lakes; some from Fort Collins have been identified for S. Arthur Johnson; and Warren has others from Colorado Springs, Westcliffe, and Divide. The species is recorded from Estes Park.^ Microtus ochrogaster haydeni (Baird). Upland Mouse. The upland mouse has been taken in Colorado at only a few locali- ties along the eastern base of the foothills, and at Wray and Tuttle, 1 Several .specimens collected in the cool canyon bogs at Wray are abnormally dark, but can be matched by a few .specimeas from elsewhere in the range of modestus. 2 Mammals of Colorado, p. 250, 19( 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 Cary, Merritt, 1880-1918; United States. Bureau of Biological Survey. Washington : Government Printing Office
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