. Ecology of the coyote in the Yellowstone . Field mouse 780 436 251 41 During July, August, September, and October the relative proportion of pocket gophers to field mice in the droppings is higher than earlier or later in the season. This high pocket gopher incidence probably coincides with a period of greater surface activity. The occurrence of gophers and field mice in the droppings from April to November is as follows: Month April May June July- Pocket Field gopher mouse 17 237 166 513 280 474 122 90 Month August. . September October . November Pocket gopher 296 813 86 146 Field mouse 172
. Ecology of the coyote in the Yellowstone . Field mouse 780 436 251 41 During July, August, September, and October the relative proportion of pocket gophers to field mice in the droppings is higher than earlier or later in the season. This high pocket gopher incidence probably coincides with a period of greater surface activity. The occurrence of gophers and field mice in the droppings from April to November is as follows: Month April May June July- Pocket Field gopher mouse 17 237 166 513 280 474 122 90 Month August. . September October . November Pocket gopher 296 813 86 146 Field mouse 172 893 67 567 123
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