As I reported two years ago (see Our Cottontail Colony), the cottontail population on our Littleton farm has exploded since red fox and coyotes stopped denning on the property. No doubt, visiting predators (including owls, hawks, fox and coyotes) take a limited toll on their numbers but our resident cottontails remain active and conspicuous, night and day.
Fortunately, the rabbits nibble primarily on the various grasses, weeds and ground-cover plants that cloak our fields and "lawns" and have not significantly damaged the other vegetation; rather, their major impact has resulted from their digging. While cottontails use the abandoned dens of other mammals and may nest in woodpiles our outbuildings, they do not construct their own underground tunnels and chambers. However, they are fond of scooping out "forms," shallow depressions in which they rest or place their nests; they also may dig up roots or tubers that suite their fancy.
As a result, our property is pock-marked with cottontail forms and, since the soil is dry and sandy, vegetation is slow to recover. Add a burgeoning cottontail population and their habit of nesting at least four times each year and we have ourselves a problem. Despite the cute appearance and docile nature of our cottontails, I'm beginning to root for the predators.