Common Types of Bats in Upstate New York

This article is concerned with those bats that frequently enter man-made strutures and cavities including attics, lofts, barns and belfries in the Capital Region from Albany - Saratoga Region's as well as the Castkills and Chatham -Columbia County area

The Big Brown Bat

The Big Brown Bat weighs 2-3 times more than any other NY cave bat and has a wing span of 13". Most Big Browns are tolerant of cold temperatures; it often winters near the entrance of caves and mines, and is one of the state's only bat species to regularly winter in buildings including attics and belfries. The Big Brown often raises its young in buildings as well as trees; it is one of our most common summer bats. The Big Brown is most responsible for bats in the winter coming down into the living area of homes. The Big Brown thinks its spring when the heat turns up or they are awakened from hibernation, hungry and probably cold. The Big Brown will scratch on the sheetrock under the insulation in your attic to stay warm. Residents may hear this above their head and become alarmed. In the winter months this scratching or a sudden appearance is a dead giveaway of a bat's hibernating/roosting in your attic. Professional Service is needed immediately.       

The Little Brown Bat

The Little Brown Bat is most common bat in the Upstate NY region; little brown bats are common tenants of barns, buildings, cavities and residential attics. These unwanted guests are great for mosquito control but toxic to your home and attic.  This northern species is probably the bat you see flying low over the water on a summer night and has a wing span of 9inches. The Little Brown Bat in Upstate NY is an insectivore that eats a variety of insects and can eat 50% of their body weight in evening. Little Browns primarily feed over water and wetlands where the food supply is abundant. Sexual Maturity is reached in about 6-8 Months for females and about one year for males. The Breeding period is from Sept-Oct. The female will store the sperm until spring. The young bats in upstate NY are born in early June to Late July.   

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