Iowa’s occurrence record for the eastern cottontail reaches nearly every corner of the state, 1,332 records spread across 89 counties, with the heaviest reporting around Johnson, Polk, and Story counties. Few Iowa mammals show up so consistently, and the reason is straightforward: the cottontail thrives in exactly the brushy, broken-up ground that Iowa’s farmed landscape produces in abundance.
An edge animal in a state full of edges
A cottontail needs dense escape cover sitting within a short dash of open feeding ground, and Iowa supplies that pairing at every scale, from fencerows and grass waterways to shrubby ditches, garden borders, and prairie plantings. Records from Decorah and the Driftless Area, Lake Keomah State Park, and the prairie plots at Finkbine Prairie (West) all fit the same pattern. Through the growing season it grazes grasses, clover, and other green forbs; in winter it shifts to the bark, twigs, and buds of woody plants, often working the same brush it hides in by day.
A breeding season that fills the calendar
Counts climb steeply from April through July, and that is breeding biology written on the calendar. Cottontails raise several litters between early spring and midsummer, each in a shallow, grass-lined nest tucked into open cover, so by early summer both adults and half-grown young are out feeding at dawn and dusk. Winter counts thin not because rabbits leave or sleep, they stay active all year, but because they hold tight to cover and are simply seen less.
Status in Iowa
NatureServe ranks the eastern cottontail S5, Secure, in Iowa, and the species is native to the state. USGS NAS does not list it as nonindigenous here.
Full species profile
