During warmer months, most bats found in buildings (like homes) are either Little Brown Bats or Big Brown Bats. The presence of any wild animal, including bats, in a home is an obvious indication that the house is not weather-tight.
https://www.mass.gov/service-details/bats-in-the-home
There are multiple hypotheses for how vampire bats evolved. 1  They evolved from frugivorous bats with sharp teeth specialized for piercing fruit. 2  They initially fed on the ectoparasites of large mammals, and then progressed to feeding on the mammals themselves (similar to red-billed oxpecker feeding behavior)
https://en.wikipedia.org/wiki/Vampire_bat
Vampire bats are in a diverse family of bats with many food sources, including nectar, pollen, insects, fruit, fish, and meat. The three species of vampire bats are the only mammals that have evolved to feed exclusively on blood.
https://en.wikipedia.org/wiki/Vampire_bat
It may also be helpful to put up a bat house nearby to provide an alternate site for the bats. Since bats are protected in Massachusetts, attempts to evict a colony of bats can only be made during the early spring (during the month of May), or late summer (from August 1st to mid-October). Waiting to evict the colony allows time for any young bats to mature and leave the house on their own.
https://www.mass.gov/service-details/bats-in-the-home
A colony of Peters' tent-making bats (Uroderma bilobatum) Bats are mammals in the order Chiroptera. They are the only mammals that can fly. Other mammals like flying squirrels, or flying possum, can glide but not fly. Bats are nocturnal – they are active during the night, dusk, or dawn. Most use echolocation to catch prey and to find their way about. As nighttime animals, bats avoid direct competition with birds, few of which are nocturnal. Bats are a successful group. They are the second largest order of mammals: there are more than 1,100 species of bats.
https://simple.wikipedia.org/wiki/Bat
Bats are mammals in the order Chiroptera. They are the only mammals that can fly. Other mammals like flying squirrels, or flying possum, can glide but not fly. Bats are nocturnal – they are active during the night, dusk, or dawn. Most use echolocation to catch prey and to find their way about. As nighttime animals, bats avoid direct competition with birds, few of which are nocturnal. Bats are a successful group. They are the second largest order of mammals: there are more than 1,100 ...
https://simple.wikipedia.org/wiki/Bat
Bats in folklore and fiction. In the West, bats are associated with vampires, who are said to be able to change into bats. Bats are also a symbol of ghosts, death and disease. However bats are said to be lucky in some European countries, such as Poland. The bat is used in fiction by both villains like Dracula and heroes like Batman.
https://simple.wikipedia.org/wiki/Bat
In Sarawak, Malaysia bats are protected species, but the large naked bat and greater nectar bat are eaten by the local communities. Bats in folklore and fiction In the West, bats are associated with vampires, who are said to be able to change into bats.
https://simple.wikipedia.org/wiki/Bat
Bats in the Home Learn how to evict bats safely or live with them. The Massachusetts Homeowner's Guide to Bats has information and advice on how to evict and relocate bats, plus tips on handling a bat, designs for one-way doors, and bat house plans. This guide also features a key to identifying the nine bat species in Massachusetts.
https://www.mass.gov/service-details/bats-in-the-home
Vampire bat - Footnotes. ^ 1  a b Andrea L. Wetterer; Matthew V. Rockman; Nancy B. Simmons (2000). ^ 2  Wetterer, A. L., Rockman, M. V., & Simmons, N. B. (2000). ^ 3  Delsuc, E. J., & Douzery, P. 2016. ^ 4  Breidenstein C. P. (1982). ^ 5  Morton D., Wimsatt W. A. (1980). ^ 6  Singer M. A. (2002). ^ 7  Slaughter, B. H. (1970). ^ 8  Gillette, D. D. 1975.
https://en.wikipedia.org/wiki/Vampire_bat
what are bats
Bats are mammals in the order Chiroptera.