In some hibernacula, populations plunged by as much as ninety-seven per cent. |
During the latter part of August, the larvae descend to the base of the trunk and overwinter in white silken hibernacula. |
In many hibernacula — the disease seems to afflict bats only during the winter — the mortality rate has reached over ninety per cent. |
Ecologically, species at risk and a garter snake hibernacula at Fort Livingstone are the only features requiring special consideration. |
They moult in the newly constructed hibernacula and remain there until spring. |
Big brown bat has only been observed to over-winter in New Brunswick in urban settings, where they use buildings as hibernacula. |