
Bats
 High speed w/ extreme maneuverability.
 Can fly up to 60 mph but average about 10 mph
 Bats forage and eat on the wing.



Only true flying mammals
Date to Eocene (50 mya)
worldwide
17 families
 170 genera
 957 species


suborders
Megachiroptera-flying foxes of tropics
 Microchiroptera-worldwide

Modes of Flight:
Flight surface is covered with skin and supported by
four fingers:
What is the fifth finger used for?_______________________
Why is the pelvis so small and the thoracic region so large?
______________________________________________

True echolocation occurs only in the
microchiroptera.
 Sound is produced in the larynx.
 Sound is emitted through the nose or the
open mouth.
 Echolocation is used for catching prey and
flying.
http://content.lib.utah.edu/cdm4/item_vi
ewer.php?CISOROOT=/wss&CISOPTR=10
01
So how can the bat be removed?????
How echolocation works:
Animals emit calls, then listen to the echoes that
return from various objects. They use these echoes
to locate and identify the objects. weird bat boy
http://www.youtube.com/watch?v=r9mvRRwu5Gw
&safety_mode=true&persist_safety_mode=1&safe
=active




http://videos.howstuffworks.com/animals/ba
ts-videos.htm
Why can we hear some of the bat sounds and
not others?___________________________.
Whispering bats such as the vampire bat we
can not hear.
Answer: Humans hear sounds ranging up to 20
kHz, while most bats use a broader range (from
about 9 kHz to 200+ kHz)




Why can we hear some of the bat sounds and not
others. Video explanation.
Whispering bats such as the vampire bat we can not
hear
Humans hear sounds ranging up to 20 kHz, while
most bats use a broader range (from about 9 kHz to
200+ kHz)
http://videos.howstuffworks.com/animals/batsvideos.htm
 Used primarily by insectivores and piscivores bats
why?__________________________________
 Molossids
 Noctilionids
Microchiroptera
 Vespertilionids
 Some bats emit the pulses through the nose.
 Rhinolophids.

Why use high frequency sounds?

High frequency sounds travel rapidly in air.

Earliest bat fossils are from the early Eocene of
North America:


Icaronycteris index
There are no intermediate forms - earliest bats
are good bats. Why?_______________________
Mosquito
100 mya
Bat Fossil 50 mya
the



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all are, ‘evening’ bats
all are insectivorous, hence migrate or hibernate
9 species found on Long Island
Where do these bats roost?____________________
Just the facts:
 NY’s most common bat
 6-9 grams
 may live to 25 years
 favors ponds and streams for foraging
 forages at about 13 mph, 3-6 m above ground
 mate in early autumn; fertilization in spring; 50-60 day gestation
 move to maternity colonies of hundreds
 born after 30 minute labor in late May weighing1.5 grams
 reaches sexual maturity at 8 mos.
 http://www.youtube.com/watch?v=brjYYaZavoQ&safety_mode
=true&persist_safety_mode=1
Little Brown Myotis Range
Formerly Keen’s Myotis, Myotis keenii
Adopt a Bat :)
http://video.nationalgeographic.com/video/player/animals/mammalsanimals/bats/bat_woollyfalsevampire_eatsbat.html
http://www.youtube.com/watch?v=moG6JDmJdc&safety_mode=true&persist_safety_mode=1&safe=active
http://animal.discovery.com/videos/raw-nature-vampire-bats.html
Based on the past
Video, Vampire bats
cause what Illness:
__________
Comparisons of Deaths in the
U.S. to Bat Rabies:
Bat Transmitted Rabies (19802000): 1.2 people per year
Accidents Involving Deer: 200
people per year
Lightning Strikes: about 90
people per year
Dog attacks: 15-25 people per
year
Toppling Vending Machines: 2.2
people per year
(So, more people are killed from
toppling vending machines than
bat rabies)
Still Please Don't Pick Up or
Touch Any Bats!

Pteropodidae
Also called Old World fruit and
flying foxes and found only in
the tropics.
 154 species
 Predominantly nocturnal
 Large body sizes ranging
from 15g to 1.6Kg. (up to 5 feet and
3-6pounds)
 They are specialized for feeding
on fruit and nectar. (Crush and
drink the fruit juice)
 http://www.youtube.com/watc
h?v=uhMXptEj6z8&safety_mode

 Contrary to popular belief, not
all bats can echolocate.
 Megachiroptera, they do not
echolocate like microchiroptera.
 Large-bodied, and feed on
fruit, nectar, and pollen. They
rely mainly on vision and
olfaction to find food and are
often referred to as flying
foxes because many have doglike faces.
 http://www.derm.qld.gov.au/wildlife-
ecosystems/wildlife/sounds/black_flying_fo
x.mp3
Giant golden-crowned flying fox
(Largest Bat, 5 feet)
Flying foxes
(bats)
Fruit bats