Bats

Bats are becoming more and more of a property-maintenance problem throughout western Montana. Bats are beneficial, but can also be dangerous. They can inflict significant damage to property, while creating health-related problems if not properly addressed. Often, bat problems are discovered at vacation properties and lake cabins while the properties are not in use. We are also discovering increased bat problems for commercial and business properties. We employ techniques to remove the bat infestation from your property and then seal the building to ensure the bats do not return.

 

A few common species of Bats in Montana:

Big Brown Bat: A larger bat with overall brown to copper-colored fur. The muzzle is distinctively round and dark. Forearm length is 43-52mm. The uropatagium is unfurred on the posterior half and a keel is present on the calcar.

California Myotis: One of North America’s smallest bats with a wingspan of 9-10 inches (22-26 centimeters) and weighing 0.1-0.2 ounces (3-5 grams). Similar to Western Small-footed Myotis in appearance, but distinctive characters include a steep sloping forehead, a rostrum that is short and delicate in appearance, and a tail that does not extend beyond the border of the tail membrane.

Eastern Red Bat: The Eastern Red Bat is a moderately-sized lasurine (7 to 15 g) with long pointed wings and heavily-furred interfemoral membrane. Pelage overall is reddish, lighter on the belly than the back. Ears are low and rounded, tragus triangular, forearm length about 39 to 41 mm. It has large teeth.

Fringed Myotis: The Fringed Myotis is a member of the long-eared myotis group. Although similar to Western Long-eared Myotis  it is the only species with a well-developed fringe of hairs on the posterior margin of the uropatagium, and is larger than most other Myotis, except in ear size. The robust calcar is not distinctly keeled. The skull is relatively large, with a well-developed sagittal crest, and 38 teeth. Color of the pelage varies from yellowish-brown to darker olivaceous tones; color tends to be darker in northern populations. The ears and membranes are blackish-brown and tend to contrast with the pelage. Length of the head and body is 43 to 59 millimeters, length of the tail is 34 to 45 millimeters, length of the ear is 16 to 20 millimeters, length of the forearm is 40 to 47 millimeters, and weight is 5.4 to 10.0 grams. Females are significantly larger in head, body and forearm size.

 

 

If you would like to learn more about the bats of Montana please visit the Montana Field Guide by clicking HERE.