Aegialomys galapagoensis
The ears are long and covered with dense hair, and the feet have large pads on the soles, with claws up to 2.5 millimetres (0.1 in) in length, suggesting that it has little, if any, climbing ability.[1] The Galapagos rice rat is primarily nocturnal, but may sometimes be active before sunset,[5] spending the day resting in crevices beneath lava blocks or under shrubs.[3] Breeding seems to take place primarily in the hot season with young being born between March and May,[7] but may occur at other times of year, perhaps depending on the availability of food resources.A. g. galapagoensis was formerly found on San Cristóbal Island, where Charles Darwin captured several live specimens on the second voyage of HMS Beagle in 1835.However, it is believed that it became extinct only decades after Darwin's visit, and the next specimens collected were subfossil remains found in lava tubes by David Steadman and colleagues in 1984.