Did a search on Michigans DNR site, go to article 4, that is the section covering bats. Was curious about the legalities of this, so I looked it up. Here is the link:
Bat link

Chapter IX -- Protected and Unprotected Animals
9.1 Permitted acts; certain species.
Sec. 9.1. (1) English sparrows, feral pigeons, and starlings may be taken by hunting statewide, year around except
within state park and recreation areas from April 1 to September 14. English sparrows and starlings may be taken
without a permit when doing or about to do damage to property or committing or about to commit depredations.
Opossum, weasels, ground squirrels, and red squirrels may be taken by hunting and trapping statewide, year around
except within state park and recreation areas from April 1 to September 14.
(2) Mute swans and their eggs and nests may be taken by department personnel, and persons authorized in
writing by the department to control mute swans under one or more of the following situations:
(a) To stabilize or reduce mute swan population levels or to prevent new populations of feral mute swans from
being established in this state.
(b) To prevent mute swans interference with the establishment, reestablishment, or reproductive success of native
wildlife and with the establishment or reestablishment of native vegetation.
(c) To prevent mute swans interference with the establishment, reestablishment, or reproductive success of
endangered or threatened species.
(d) To protect public health, safety, or welfare.
(3) Mute swans taken as provided in this section shall not be released back into the wild in this state. Mute swans
rendered and certified incapable of flight by a licensed veterinarian and prevented from reproducing at the
permittee’s expense may be possessed with written authorization. For the life of the swan, this authorization will be
contingent upon the ability of the permittee to render any resulting eggs incapable of hatching. The permit may be
revoked by the department upon evidence that the mute swan has successfully reproduced.
(4) A bat may be taken whenever there is any reason to believe the bat was involved in a bat-human or batdomestic
animal exposure to rabies or other health hazard. Bats taken under this subsection shall not be held in
captivity except for temporary holding of the animal at the request or recommendation of a physician or public
health official for public health reasons. Bats held in captivity for public health reasons shall be humanely
euthanized. Except for threatened or endangered species, or as otherwise provided by this order, bats may be taken:
(a) When creating a damage or nuisance problem on privately-owned property.
(b) Incidental to normal forest management activities occurring on public or private lands.
(c) Incidental to closure of an abandoned mine as a result of public safety concerns.
(d) Incidental to demolition of buildings or other structures.