The History and Structure of a Large Warren of the Rabbit, Oryctolagus-Cuniculus, at Canberra, Act

Abstract

A 5-year-old rabbit warren in a 33-ha enclosure had 150 entrances and a total tunnel length of 517 m; it was estimated that 10.35 m*3 of soil had been excavated from the warren. Penetrometer readings indicated the presence of a hard layer in the soil at 600-700 mm. The depth of the warren was limited by this hard layer, the rabbits not having excavated below 700 mm. The hard layer had a low permeability, and flooding of the warren resulted in the deaths of nestling rabbits.