2011  As the international year of bat
This is a presentation presenting before you  By the team of  ST.ANTONY’S H.S.S PLASSANAL AJAY SIVAN AKASH RAJ JOSE CLEMENT
An Introduction to  Bats
Bats can fly, but they are not birds.
Bats   have   fur . Their wings are  made of skin.
BATS <ul><li>Creepy, blind, blood-sucking RODENTS of the night….right? </li></ul>
<ul><li>Bats are flying rats </li></ul><ul><li>Bats will attack you for no reason </li></ul><ul><li>Bats will fly into you...
Actually….. <ul><li>Those are all just  </li></ul><ul><li>BAT MYTHS </li></ul><ul><li>Bats won’t fly into your hair or att...
Bats hang upside down when they sleep.  This is called roosting.
What do Bats Eat? <ul><li>FRUIT- “frugivory” </li></ul><ul><li>FLOWERS- nectar or pollen </li></ul><ul><li>CARNIVORES- bir...
How do Bats Fly? <ul><li>Bats are the only mammals capable of TRUE powered flight </li></ul>
Bats have arms and hands like you . hands fingers BAT
Bats Actually Fly With Their Hands, Not Their Arms!
What is Echolocation? <ul><li>Microbats use ECHOLOCATION for navigation and prey capture: </li></ul>
Bats are nocturnal. They stay awake at night and hunt for food. Do you know what some bats eat? insects
When the sun goes down Bats will come outside Through the dark They fly around With echoes as their guides.
Why Are Bats Important? <ul><li>Bats are important pollinators of many plant species including the agave plant (ie. Tequil...
Economic Importance of Bats in Agriculture <ul><li>The story of Mexican free-tailed bats in Central Texas </li></ul><ul><u...
Rabies Prevention <ul><li>DON’T HANDLE WILD MAMMALS, including bats!!!!!! </li></ul><ul><li>Keep your pets vaccinated </li...
Bats in Georgia: 16 Species
Family Vespertilionidae: The Evening Bats
Tadarida brasiliensis Mexican Free-tailed bat
<ul><li>Rare- possibly declining in numbers due to habitat loss </li></ul><ul><li>Roosts in abandoned buildings, hollow tr...
Southeastern Myotis Myotis austroriparius <ul><li>Species of Concern by USFWS </li></ul><ul><li>Cave bat eastern US </li><...
Big Brown Bat Eptesicus fuscus <ul><li>One of the most common bats in urban areas and bat houses </li></ul><ul><li>Often r...
Eastern Red Bat Lasiurus borealis <ul><li>Solitary, tree-roosting bat </li></ul><ul><li>Hangs by one foot </li></ul><ul><l...
Hoary Bat Lasiurus cinereus <ul><li>Solitary, roots among foliage on forest edges </li></ul><ul><li>Can fly 24 miles in on...
Evening Bat  Nycticeius humeralis <ul><li>Abundant in SE US </li></ul><ul><li>Forest bat- hardly ever in caves </li></ul><...
Eastern Pipistrelle Pipistrellus subflavus <ul><li>Common in forest edges and near agricultural areas </li></ul><ul><li>On...
Northen Yellow Bat Lasiurus intermedius <ul><li>Roosts year-round in Spanish moss and palm fronds </li></ul><ul><li>Abunda...
Family Molossidae The Free-tailed Bats
Mexican Free-tailed Bat Tadarida brasiliensis <ul><li>Another very common urban and bat house bat </li></ul><ul><li>One of...
Bat Conservation
Threats to Bat Populations <ul><li>Loss of historical roost sites </li></ul><ul><li>Disturbance of roost sites, esp. caves...
Hot Topics in Bat Research <ul><li>Phylogeny and evolution </li></ul><ul><li>Functional morphology </li></ul><ul><li>Echol...
Top 5 Conservation Research Goals (NABCP) <ul><li>Goal 1:  Identify key resources- Flyways, roosts, drinking and foraging ...
Top 4 Management Goals (NABCP) <ul><li>Goal 1: Develop management standards and guidelines for bats, including them in exi...
Common Methods For Studying Bat Populations <ul><li>Population Surveys: Counts </li></ul><ul><ul><li>Direct Roost Counts <...
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Bat

  1. 1. 2011 As the international year of bat
  2. 2. This is a presentation presenting before you By the team of ST.ANTONY’S H.S.S PLASSANAL AJAY SIVAN AKASH RAJ JOSE CLEMENT
  3. 3. An Introduction to Bats
  4. 4. Bats can fly, but they are not birds.
  5. 5. Bats have fur . Their wings are made of skin.
  6. 6. BATS <ul><li>Creepy, blind, blood-sucking RODENTS of the night….right? </li></ul>
  7. 7. <ul><li>Bats are flying rats </li></ul><ul><li>Bats will attack you for no reason </li></ul><ul><li>Bats will fly into your hair </li></ul><ul><li>Bats are blind </li></ul>
  8. 8. Actually….. <ul><li>Those are all just </li></ul><ul><li>BAT MYTHS </li></ul><ul><li>Bats won’t fly into your hair or attack you </li></ul><ul><li>They aren’t blind at all </li></ul><ul><li>And they aren’t even rodents…… </li></ul>No body likes me….
  9. 9. Bats hang upside down when they sleep. This is called roosting.
  10. 10. What do Bats Eat? <ul><li>FRUIT- “frugivory” </li></ul><ul><li>FLOWERS- nectar or pollen </li></ul><ul><li>CARNIVORES- birds, reptiles, amphibians </li></ul><ul><li>FISH- highly specialized carnivores </li></ul><ul><li>BLOOD- “sangrivory” </li></ul><ul><li>INSECTS- aerial or foliage gleaners </li></ul>
  11. 11. How do Bats Fly? <ul><li>Bats are the only mammals capable of TRUE powered flight </li></ul>
  12. 12. Bats have arms and hands like you . hands fingers BAT
  13. 13. Bats Actually Fly With Their Hands, Not Their Arms!
  14. 14. What is Echolocation? <ul><li>Microbats use ECHOLOCATION for navigation and prey capture: </li></ul>
  15. 15. Bats are nocturnal. They stay awake at night and hunt for food. Do you know what some bats eat? insects
  16. 16. When the sun goes down Bats will come outside Through the dark They fly around With echoes as their guides.
  17. 17. Why Are Bats Important? <ul><li>Bats are important pollinators of many plant species including the agave plant (ie. Tequila), the saguaro cactus and many rainforest plant species </li></ul><ul><li>Bats are vital for the control of insect populations </li></ul>
  18. 18. Economic Importance of Bats in Agriculture <ul><li>The story of Mexican free-tailed bats in Central Texas </li></ul><ul><ul><li>Bracken Cave: ~20 million Mexican free-tailed bats (single largest aggregation of mammals in the world) </li></ul></ul><ul><ul><li>Central Texas caves, including Bracken Cave, are summer maternity roosts for ~ 100 million Mexican free-tailed bats </li></ul></ul><ul><ul><li>It is estimated that these bats eat about 2 million lbs of insects every night </li></ul></ul>
  19. 19. Rabies Prevention <ul><li>DON’T HANDLE WILD MAMMALS, including bats!!!!!! </li></ul><ul><li>Keep your pets vaccinated </li></ul><ul><li>If you think you have been exposed, seek medical attention promptly </li></ul>
  20. 20. Bats in Georgia: 16 Species
  21. 21. Family Vespertilionidae: The Evening Bats
  22. 22. Tadarida brasiliensis Mexican Free-tailed bat
  23. 23. <ul><li>Rare- possibly declining in numbers due to habitat loss </li></ul><ul><li>Roosts in abandoned buildings, hollow trees and caves in or near bottomland hardwood habitats </li></ul><ul><li>Will glean insects from foliage or capture them in flight </li></ul><ul><li>Easily disturbed </li></ul>
  24. 24. Southeastern Myotis Myotis austroriparius <ul><li>Species of Concern by USFWS </li></ul><ul><li>Cave bat eastern US </li></ul><ul><li>Roosts in hollow trees, culverts, and bridges in areas w/o caves </li></ul><ul><li>Also associated with bottomland hardwood areas </li></ul><ul><li>Only Myotis bat to have twins </li></ul>
  25. 25. Big Brown Bat Eptesicus fuscus <ul><li>One of the most common bats in urban areas and bat houses </li></ul><ul><li>Often roots in buildings- prefers snags in natural habitat </li></ul><ul><li>Often return to maternity roost where they were born </li></ul><ul><li>Forage in a variety of habitats </li></ul>
  26. 26. Eastern Red Bat Lasiurus borealis <ul><li>Solitary, tree-roosting bat </li></ul><ul><li>Hangs by one foot </li></ul><ul><li>Will also hibernate in leaf litter on forest floor </li></ul><ul><li>Used to form large daytime migratory flocks in 1800’s </li></ul><ul><li>2-5 young (usually 3) </li></ul>
  27. 27. Hoary Bat Lasiurus cinereus <ul><li>Solitary, roots among foliage on forest edges </li></ul><ul><li>Can fly 24 miles in one night while foraging </li></ul><ul><li>Territorial over foraging sites </li></ul><ul><li>Often migrate with bird flocks </li></ul><ul><li>One of the most widespread bats in N. America </li></ul><ul><li>Hawaii’s only native land mammal </li></ul>
  28. 28. Evening Bat Nycticeius humeralis <ul><li>Abundant in SE US </li></ul><ul><li>Forest bat- hardly ever in caves </li></ul><ul><li>Little is known about its migration patterns </li></ul>
  29. 29. Eastern Pipistrelle Pipistrellus subflavus <ul><li>Common in forest edges and near agricultural areas </li></ul><ul><li>One of first bats to emerge in evening </li></ul><ul><li>Forage high in canopy </li></ul><ul><li>Will hibernate in caves and in culverts </li></ul>
  30. 30. Northen Yellow Bat Lasiurus intermedius <ul><li>Roosts year-round in Spanish moss and palm fronds </li></ul><ul><li>Abundant on the coast </li></ul><ul><li>Will forage over sand dunes and beaches </li></ul><ul><li>Typically have 3 pups </li></ul>
  31. 31. Family Molossidae The Free-tailed Bats
  32. 32. Mexican Free-tailed Bat Tadarida brasiliensis <ul><li>Another very common urban and bat house bat </li></ul><ul><li>One of most widely distributed mammals in Western Hemisphere </li></ul><ul><li>Highly gregarious </li></ul><ul><li>Much of the population is migratory </li></ul>
  33. 33. Bat Conservation
  34. 34. Threats to Bat Populations <ul><li>Loss of historical roost sites </li></ul><ul><li>Disturbance of roost sites, esp. caves </li></ul><ul><li>Ignorance: </li></ul><ul><ul><li>General public: negative attitudes </li></ul></ul><ul><ul><li>Scientific: Very little is known about the distribution, numbers and specific requirements of most bat species </li></ul></ul><ul><li>Habitat destruction/fragmentation </li></ul>
  35. 35. Hot Topics in Bat Research <ul><li>Phylogeny and evolution </li></ul><ul><li>Functional morphology </li></ul><ul><li>Echolocation </li></ul><ul><li>Conservation Biology </li></ul><ul><ul><li>North American Bat Conservation Partnership (NABCP) Strategic Plan </li></ul></ul>
  36. 36. Top 5 Conservation Research Goals (NABCP) <ul><li>Goal 1: Identify key resources- Flyways, roosts, drinking and foraging habitats </li></ul><ul><li>Goal 2: Establish baseline populations and trends </li></ul><ul><li>Goal 3: ID species requirements and limiting factors </li></ul><ul><li>Goal 4: Describe, quantify, and monitor the effects of current land-management practices and other human disturbances on bats. </li></ul><ul><li>Goal 5: Quantify the economic and social impacts of North American bats. </li></ul>
  37. 37. Top 4 Management Goals (NABCP) <ul><li>Goal 1: Develop management standards and guidelines for bats, including them in existing management plans for other wildlife and associated habitat. </li></ul><ul><li>Goal 2: Identify, protect, and enhance key roosting, feeding, and drinking resources for bats. Reestablish bat populations to the extent necessary. </li></ul><ul><li>Goal 3: Incorporate bat conservation language into existing statutes for wildlife protection. </li></ul><ul><li>Goal 4: Integrate strategic plans for bats into other existing plans and initiatives. </li></ul>
  38. 38. Common Methods For Studying Bat Populations <ul><li>Population Surveys: Counts </li></ul><ul><ul><li>Direct Roost Counts </li></ul></ul><ul><ul><li>Nightly Dispersal Counts </li></ul></ul><ul><ul><li>Maternity Roost Counts </li></ul></ul><ul><ul><li>Ultrasonic Bat Detectors </li></ul></ul><ul><ul><ul><li>Simple handheld </li></ul></ul></ul><ul><ul><ul><li>ANABAT (records for computer analysis) </li></ul></ul></ul><ul><li>Population Surveys: Captures </li></ul><ul><ul><li>Mist Nets </li></ul></ul><ul><ul><li>Harp Traps </li></ul></ul><ul><ul><li>Trip Lines (over water sourcesaa) </li></ul></ul>

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