Hoary bat
![](/Images/godic/202501/18/Hoary_bat_adult2939.JPG")
![](/Images/godic/202501/18/Distribution_of_Lasiurus_cinereus2940.png")
![Juvenile male hoary bat on a tree, frosted 'hoary' dorsal coloration visible](/Images/godic/202501/18/Hoary_bat_dorsal_coloration2940.JPG")
![Hoary bat examined by a scientist. The inner forearm was marked with black sharpie to provide re-capture data. The furred uropatagium, namesake of the genus (Lasiurus), is visible in photo](/Images/godic/202501/18/Hoary_Bat2940.JPG")
The hoary bat (Lasiurus cinereus) is a species of bat in the vesper bat family, Vespertilionidae. It occurs throughout most of North America and much of South America, with disjunct populations in the Galápagos Islands and Hawaii.
The hoary bat averages 13 to 14.5 cm (5 to 5.7 in) long with a 40 cm (15.7 in) wingspan and a weight of 26 g (0.9 oz). It is the largest bat normally found in Canada. Its coat is dark brown and the hairs on the back are frosted with silver. The body is covered in fur except for the undersides of the wings.