Order : Chiroptera
Family : Molossidae
Facts about the family Molossidae, the free-tailed bats
Like many state birds, Mexican free-tailed bats arent faithful to their adoptive state.
Migration for Mexican free-tailed bats is essentially a behavioral adaptation to minimize body heat loss.
'; TEXTNOTE ID=1 TITLE=Geographic_Distribution TEXT='The geographical distribution of Molossidae is shown in red.
DISTRIBUTION: Eumops underwoodi, a member of the Family Molossidae, is known in the United States only from a few localities in Pima County, Arizona.
Mexican free-tailed bats are also known as "guano bats" for the prodigious quantities of droppings that they produce.
Mexican Free-tailed Bats are born in June and weaned in five weeks when they can fly with their mothers.
Mexican free-tailed bats are migratory, and in the southwestern United States are present from April through September.
Our research on Mexican free-tailed bats is already underway with two projects in Central Texas directed by BCI and Dr.
Pesticides and Bats A new stress commonly implicated in the decline of free-tailed bats is the use of organochlorine pesticides, specifically DDT and dieldrin.
Pollak, Response selectivity for species-specific calls in the inferior colliculus of Mexican free-tailed bats is generated by inhibition, Journal of Neurophysiology, Vol.
The characteristic odor of Mexican free-tailed bats is found by analyzing the volatiles from their roosts or their urine, but it is too strong to be called â€˜taco shellâ€™ from these sources unless diluted.
The massive Gua Payau Cave, with its evening emergence of nearly two million free-tailed bats, is the main feature that attracts adventuresome visitors to the park.
The sight of twenty million emerging free-tailed bats is a never-to-be-forgotten experience.
The geographical distribution of Molossidae is shown in red. (Full text)
Free-tailed bats are found worldwide in warm regions. (Full text)
Other free-tailed bats are smaller. (Full text)
Similar Species Except for Little Free-tailed, which occurs only in Florida Keys and has ears joined at the base, all other free-tailed bats are considerably larger. (Full text)
One alternate name for free-tailed bats is "bulldog bats", and the German equivalent is Bulldog-Fledermäuse, so perhaps a "Molossian hound" was something like a bulldog. (Full text)
Conservation and Management: Although big free-tailed bats are locally abundant, they (Full text)
Human EncountersMexican free-tailed bats are the most commonly encountered bats in Texas, and their spectacular evening emergences are easily observed (see page 66). (Full text)