






Mammal
Only flying mammal
Small
Nocturnal
Live in caves
Eat insects and fruit
Live in caves
http://www.flowstonenews.com
wildirdarden.inc






Blind
Vampires
Fly into hair
Dirty
Carry rabies
Mice
Big Brown
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Little Brown
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Hoary
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Northern Myotis
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Tri-colored
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Eastern Red
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Silver-Haired
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Tri-colored
Little brown
Big brown
Northern myotis
Hoary
© Merlin D. Tuttle, Bat Conservation International, www.batcon.org
Eastern red
Silver-haired
Ear
Eye
Ear
Eye
Ear
Nose
Eye
Ear
Nose
Teeth
Eye
Ear
Nose
Teeth
Fingers
Eye
Ear
Nose
Teeth
Fingers
Tail
Eye
Ear
Nose
Teeth
Fingers
Foot
Tail
Eye
Ear
Nose
Teeth
Ribs
Fingers
Foot
Tail
Eye
Ear
Nose
Teeth
Thumb
Ribs
Fingers
Foot
Tail
Wrist
Eye
Ear
Nose
Teeth
Thumb
Ribs
Fingers
Foot
Tail
http://commons.wikimedia.org

1.) Twenty little brown bats live in a bat house
colony. If one bat can catch 600 mosquitoes
in one hour, how many mosquitoes can the
entire colony catch in two hours?
20 bats x 1200 mosquitoes x 2 hours =
48,000 mosquitoes

2.) To drink water, bats skim the surface of a
stream and drink water drop-by-drop or lick the
water off their fur. A big brown bat flies a
maximum of 30 miles a night. How close would
the big brown bat want its home to be to water?

30 miles total = 15 miles there and 15 miles back
=
15 miles

3.) Bats eat insects like moths. Bats can eat half
their weight in one night. If a Northern myotis
weighs 12 grams and a moth weighs 0.3 grams,
how many moths can the bat eat before it feels
full?

12 grams bat weight/2 = 6, so a bat can eat 6
grams
6 gram appetite/0.3 grams moth weight =

20 moths

4.) A Minnesota bat can eat half its weight in
insects in one night. How much food could
you eat in one night if you were a bat?

Depends on weight of student
Example: 70 pounds/2 = 35

You could eat 35 pounds of food!

5.) Bats have one or two babies (pups) every
year. If a tri-colored bat has pups every year for
16 years, having one pup half the time and two
the other half, how many pups would she have?



8 years x 1 pup every year = 8 pups
8 years x 2 pups every year = 16 pups
8 pups + 16 pups = 24 pups total
24 pups

6.) A bat pup weighs 30% of its mother’s body
weight. If a mother red bat weighs 14 grams,
how much will her baby weigh? If humans were
the same way, and a mother weighed 150
pounds, how much would her baby weigh?

14 grams mom weight x 0.30 = 4.2
Bat pup weighs 4.2 grams

150 pounds x 0.30 = 45
Human baby would weigh 45 pounds
http://www.flowstonenews.com

7.) A bat colony can have over one million
(1,000,000) bats living in one cave. Duluth has
86,000 people. How many times would the
population of Duluth fit into a bat cave
colony?

1,000,000 / 86,000 = 11.6
~12 times

8.) White Nose Syndrome, a dangerous disease,
can kill 90% of a bat colony. If a colony of 10,000
bats becomes sick with WNS, how many bats
would survive?


10,000 x .90 = 9,000
10,000 = 9,000 = 1,000

Or… 10,000 x 0.10 = 1,000
9,000 die; 1,000 survive

9.) Baby bats are born in spring. They grow
quickly, gaining 18% of their birth weight each
day. If a pup weighs 3 grams at birth, how much
would it weigh by the end of one week?

3 grams x 0.18 = 0.54 gram weight gain
0.54 gram x 7 days = 3.78 grams
3 grams birth weight + 3.78 gram weight gain =


6.78 grams

10.) In summer, bats that will hibernate eat a
lot to store energy for winter. They hunt after
dusk and before dawn. A little brown bat
catches 600 mosquitoes in one hour. How
many mosquitoes can a little brown bat catch
in 4 hours?

600 mosquitoes x 4 hours =
2,400 mosquitoes

11.) In fall, a hoary bat migrates south to
spend the winter. A hoary bat travels 1,400
miles from Duluth to Texas. If a hoary bat
flies 20 miles per night, how many nights
would it take the hoary bat to reach Texas?

1400 miles / 20 miles per night =
70 nights

12.) In winter, some kinds of bats hibernate.
They have to wake up to drink water and
urinate. If a silver-haired bat wakes up every
19 days during hibernation, and winter in
Minnesota lasts six months, how many times
does a silver-haired bat wake up?

6 months x ~30 days in a month = 180 days
180 days/ 19 days =

~ 10 times
Pollination
http://heylittlebat.blogspot.com
Seed Dispersal
http://ngm.nationalgeographic.com
Pest Control
http://charles-harvey.co.uk
Bat Cave Ecosystems
http://www.brac360.ky
Situation: You find bats living in your attic.
What Should You Do?
(A.) Seal the entrance the bats use. Leave them and their
babies inside to die.
(B.) Build a bat house somewhere else on your property. Bats
will move there instead.
(C.) Put speakers playing static in the attic. The bats will not
like the noise and move out.
(D.) Hire a professional to humanely remove the bats alive.
Situation: You find bats living in your attic.
What Should You Do?
(A.) Seal the entrance the bats use. Leave them and their
babies inside to die.
(B.) Build a bat house somewhere else on your property.
Bats will move there instead.
(C.) Put speakers playing static in the attic. The bats will
not like the noise and move out.
(D.) Hire a professional to humanely remove the bats .
Situation: You find a sick, injured or dead bat.
What Should You Do?
(A.) Touch it, pick it up and take it home with you.
(B.) Do not touch it. Let an adult know you found it so it can
be removed safely by a professional.
Situation: You find a sick, injured or dead bat.
What Should You Do?
(A.) Touch it, pick it up and take it home with you.
(B.) Do not touch it. Let an adult know you found it so it
can be removed safely by a professional.
Situation: You have lots of mosquitoes and annoying
insects in your yard.
What Should You Do?
(A.) Do not use pesticides. The chemicals could make bats or
other animals sick. Let the bats eat the insects; they
may be gross to us, but they are yummy to bats.
(B.) Use lots of pesticides to get rid of the nasty bugs.
Situation: You have lots of mosquitoes and annoying
insects in your yard.
What Should You Do?
(A.) Do not use pesticides. The chemicals could make bats
sick or other animals sick. Let the bats eat the insects;
they may be gross to us, but they are yummy to bats.
(B.) Use lots of pesticides to get rid of the nasty bugs.
Situation: You and your friends are walking around in
winter and find a cave.
What Should You Do?
(A.) Go in and look around! The bats will not mind if you
wake them up.
(B.) Waking bats up from hibernation uses energy reserves,
so they might not survive winter. Do not enter the cave.
Situation: You and your friends are walking around in
winter and find a cave.
What Should You Do?
(A.) Go in and look around! The bats will not mind if you wake
them up.
(B.) Waking bats up from hibernation uses energy reserves, so
they might not survive winter. Do not enter the cave.
Healthy
WNS is a deadly bat disease
1.) Identify
- white, fuzzy nose or body
2.) Report
- DNR 888-345-1730
3.) Prevent
- Don’t enter bat caves
- Clean shoes and cave gear
Sick





Build a bat house so bats have nice places to live.
Volunteer to clean up trash from forests, streams
or lakes. A clean habitat makes a happy bat.
Tell your political representatives that you want
them to help protect bats with laws and research
funding. Use the postcard below!
Learn more at www.batcon.org,
www.nrri.umn.edu/bats
Plan a conservation project with your class or
school.