Bat in the house
Many bats that end up in the house in late summer are young ones on their first flights, a gentle reminder that getting lost is part of learning. To the Caribs, a bat was a good angel guarding the home at night.
What it may mean
Late summer is bat season indoors for a simple reason: the young are learning to fly. Pups born in June leave the roost in July and August, still clumsy, still mapping their surroundings, and some take a wrong turn through a gap under the eaves or an open window. The bat circling your living room is quite possibly on one of its first nights out. That makes it an apt visitor when you are new at something yourself, a job, a city, a role you have just taken on. Getting lost a few times is part of learning a territory, not proof that you do not belong in it.
Depending on how you saw it
A bat doing laps of the living room
A bat inside usually loops along the walls and ceiling, hunting for a way out, and rarely comes near people. Closing inner doors, turning off the lights and opening one window often lets it leave by itself. What would make the exit easier to find in a situation you wandered into by mistake?
Bats in the attic
In summer, female bats often gather in warm attics to raise their young together, sometimes dozens at a time, and leave in fall. It is a nursery, not an invasion. Where in your life are people raising something together that deserves a little patience?
A bat clinging to a curtain at dawn
A tired bat may hang from a curtain or a wall until night returns. Local wildlife or animal control services know how to remove it safely, and gloves are a must if anyone handles it. When you are worn out from a long night, where do you hang on until you can move again?
Bats swooping around the porch light
Bats feeding at dusk around a porch light are hunting the moths and beetles the light attracts. They come because something else came first. What in your days is a chain like that, one thing drawing another?
Why it happens in nature
Most bats found indoors in North America are big brown bats or little brown bats. They can slip through a gap well under an inch wide, and many indoor visits happen in late summer, when young bats are learning to fly. Bats are not blind and avoid people, but some carry rabies, so they should never be picked up with bare hands.
What folk beliefs say
Caribbean (Caribs)
The Caribs regarded the bat as a good angel that protected their dwellings at night, and they considered it sacrilegious to kill one.
Source: Cora Linn Daniels; C. M. Stevans (eds.), Encyclopaedia of Superstitions, Folklore, and the Occult Sciences of the World, vol. 2 (1903), vol. 2, p. 575. View the page
England (Cornwall)
At Polperro in Cornwall, children greeted the bat with a rhyme: "Airy mouse, airy mouse! fly over my head, and you shall have a crust of bread," with a piece of wedding cake promised too.
Source: Cora Linn Daniels; C. M. Stevans (eds.), Encyclopaedia of Superstitions, Folklore, and the Occult Sciences of the World, vol. 2 (1903), vol. 2, p. 575. View the page
England
Willsford's Nature's Secrets, quoted by Brand, says that bats coming out of their holes quickly after sunset and sporting in the open air foretold fair and calm weather.
Source: John Brand; Henry Ellis (ed.), Observations on the Popular Antiquities of Great Britain, vol. 3 (1849), vol. 3, p. 189. View the page
To reflect on
Where are you new enough that getting lost now and then is simply part of learning the way?