What do small field mice eat? - briefly
Small field mice primarily consume seeds, grasses, and insects, supplementing their diet with occasional fruits, nuts, and small invertebrates. Their intake varies seasonally, shifting toward more plant matter in winter and higher insect consumption in summer.
What do small field mice eat? - in detail
Small field mice sustain themselves primarily on plant material. Seeds from grasses, cereals, and wildflowers constitute the bulk of their intake. They also consume freshly fallen grains, harvested crop residues, and the tender shoots of herbaceous plants. In addition to these carbohydrate sources, they regularly ingest a variety of nuts and fruits when available, such as acorns, berries, and small pomaceous fruits.
Animal protein supplements the diet. Insects—including beetles, caterpillars, and grasshoppers—are captured on the ground or taken from low vegetation. Larvae, spiders, and occasional earthworms provide additional nitrogen. These prey items are especially important during the breeding season, when the demand for protein rises.
Seasonal shifts affect food selection. Summer offers abundant insects and fresh vegetation; mice increase consumption of insects and leafy greens. Autumn brings a surge in seed availability, prompting storage behavior. During winter, when insects are scarce, mice rely heavily on cached seeds, dried grasses, and bark peelings to meet energy needs.
Moisture intake derives from both food and direct sources. Fresh vegetation supplies water, while dew and rain‑wet seeds contribute additional hydration. In arid periods, mice may gnaw on succulent plant parts or seek out damp soil to maintain fluid balance.
Foraging occurs close to the ground, within the herbaceous layer and at the base of shrubs. Mice exhibit opportunistic behavior, exploiting human‑altered habitats such as fields, orchards, and grain stores. Their ability to adapt to diverse food sources underlies their success across temperate agricultural landscapes.