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Common Types of Bats found in buildings in Ontario

 Little Brown Bat 

Size: 7-9 cm

Colour: Glossy brown above; buff below

Droppings: Mouse-like; easily crumble when crushed

General Info: They have poor eyesight. Like many bats, they depend on sonar-like echo-location. They have a wingspan of 22-27 cm. They generally roost in colonies of a few to hundreds of individuals. In August, bats use their hibernation site as mating site, congregating in large numbers.


Little brown bats prefer sites that are dark and poorly-ventilated, with several small access holes; attics and other parts of the building often fulfill this requirement.

Other pests or services related to Bats

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