A common scenario goes like this... It's a lovely summer evening. The sun
is beginning to set. The mosquitos are coming out. The homeowners are
relaxing in the back yard. And suddenly, they spot black figures or
shadows like small, quick skydivers leaving their house and then returning
to it.

These are no ordinary skydivers, though. These are matriarchal bats
coming out of their happy attic roost to do their part in controlling the
mosquito population of New Jersey.

Mommas will use an attic as a nursery because when pups are born their
hair is very thin. A warm attic will act as an incubator. When mom goes
out to get food in the evening and has to leave her babies, the pups (as
bat babies are called) are kept warm by the heat in the attic. (If you
have found a bat in the living quarters - separate from the attic - or
basement of your home, it is likely you have a
bachelor bat.)

There are some "positives" associated with a matriarchal colony. For one
thing, they tend to be very punctual in regards to when they come in or
go out, because their body's are getting ready to take care of pups and
instinct takes over. This is a "pro" because it makes it much easier to plan
your home's bat abatement job.

But there are also some negatives associated with the matriarchal
colony. There is a period every summer when you can’t do any kind of
bat abatement on a house due to the new pups, who cannot yet fly. If
you have flightless bats in the house and then separate their mothers
from them with a
bat exclusion, there are several possible scenarios...
none of them pleasant.

A) The babies will die - and if there are enough of them you will have an
odor. Since bats tend to congregate in tight spots, you could spend just
as much money cutting open your walls to remove the babies as you
have paid for the bat abatement;  

B) Some momma bats don’t take this separation lying down and will go
to great extremes to get back in the house (i.e. your front door);

Or C) You could wake up in the middle of the night to see a couple of
baby bats crawling across your floor looking for momma (or worse, step
on them in the dark)!

During this nursing time, all bat abatement programs have to be put on
hold. But that doesn’t mean there isn’t prep work to be done on your
house so that when the babies take flight, the abatement can be
completed in a timely fashion.

Abatements are safe in New Jersey up until the first week of June and
then again after August 1st once the babies are flying . In general,
Wildlife Removal Service
has a policy of performing no bat valve jobs
during the last two weeks of June and throughout all of July.
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All Wildlife Removal Service
(732) 656-0088
The Story of Matriarchal Bat Colonies

Bats in attics are most common in summertime,
starting in April. These are most often matriarchal
colonies - often an extended family of sisters,
aunts, grandmothers, daughters, and nieces.

One thing about bats, as far as they’re concerned:
The more, the merrier!
Matriarchal Bats