Facts, Identification & Control Bats range in size across the
different species, but tend to average about 5.5 to 19 cm in
length (tip to tail) with a wingspread of approximately 15 to 38
cm. Most weigh between 3.5 and 60 grams (in the U.S.). Bats’
bodies are covered with hair varying in color from tan to black.
Their wings stretch across elongated arm and finger bones. Most
bats have pointed ears and have the characteristic wings made of
leathery skin; there is no fur on the wings. Bats also have
teeth. When roosting, bats commonly hold on to their roost with
their hind legs, hanging upside down. They cannot grasp with
their front legs as the toes, known as fingers, are the support
of the wing. Behavior, Diet & Habits Most bats are insectivores,
feeding on insects at night. Bats will also frequent outside
lighting where insects will be flying in warmer weather. They
may also be found near swimming pools, as insects might be
attracted to these areas. There are some species that prefer
other foods such as frui