Silver-haired Bat Lasionycteris noctivagans
‘hairy wandering night’
Medium-sized. Wingspan 27-35cm. Wt 6-12 g.
Ears short, round.
Dark brown or black fur tipped with white.
- Often roosts alone or small groups. Forest-dwelling, often in tree cavities. Rarely in buildings except temporarily during migration. Maternal colonies small.
- usually 2 pups/year.
- Eat moths, beetles & emerging aquatic larvae usually caught over water, while avoiding competition with big brown & hoary bats. Slow erratic flight, may be near ground.
- Range: Across NA – NE Mexico to SE Alaska. BC populations may not migrate, but other populations go south to USA.
Photo Credit: Photographer R. W. Van Devender, © American Society of Mammalogists. Accessed 2017 at http://naturalhistory.si.edu/mna/full_image.cfm?image_id=137
Townsend’s Big-eared Bat Corynorhinus townsendii BC Blue-listed
Medium-sized. Wing span 23-31cm. Wt 6-14g.
Large ears = ½ body length. Long pointed tragus in ear =1/3 ear length.
2 noticeable glandular swellings on nose.
Stays in local area. Uses caves, mines, buildings and large tree cavities.
- Maternal colonies up to several hundred. In summer males roost alone.
- One pup/year.
- Highly agile in flight. Able to glean insects off vegetation.
- Hibernates in caves in the BC, incl. Vancouver Island.
- Range: Canada – only in BC. USA – mostly in west, in east rare.