Drey use by the Japanese flying squirrel (Pteromys momonga): a case report

Abstract

Between November and December 2017, we radiotracked two Japanese flying squirrels (Pteromys momonga) to locate their daily rest sites in Ina City in Nagano Prefecture. As a result, we found that P. momonga used dreys on the branch in addition to the previously reported use of tree cavities. The dreys were constructed from the bark and branches of the Japanese cedar (Cryptomeria japonica).