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Subject: BAT
Replies: 20 Views: 550
princ3_1 12.02.11 - 12:57pm
Bats
(Chiroptera)
Bats are one of the most prolific forms of mammals with over 900 species living in the world and making up over 20% of all mammals. Bats are the only form of mammal to have attained powered flight. Several mammals like flying squirrels glide but cannot stay in the air for long like bats can. In the United States there are 45 species of bats and seven species in the U.S. are in danger of extinction. These endangered species are:
Lesser long-nosed bat - nectar-feeding and insect eating bat of the Southwestern U.S.
Hawaiian y bat - only indigenous bat in Hawaii. Eats insects.
Greater (Mexican) long-nosed bat - nectar-feeding and insect eating bat that lives in the Big Bend area of southwestern Texas.
Virginia big-eared bat - insect eating bat that lives in a few cave in Virginia, West Virginia, North Carolina and Kentucky.
Ozark big-eared bat - only found in some caves in Oklahoma, Missouri and Arkansas.
Indiana bat - insect eating bat that during the summer lives in hollow trees and in the winter stays in just nine caves in the U.S.
Gray bat - eats insects and lives in a few caves in Alabama, Kentucky, Missouri, Arkansas and Tennessee. *
princ3_1 12.02.11 - 12:59pm
Why are bats good?
Most U.S. bats eat insects. A single bat can eat up to 1,200 mosquitoes in one hour. Some bats in the Southwestern U.S. also pollinate plants like the big saguaro cactus while drinking nectar.
How many bats have rabies?
Fewer than 0.5% of bats have rabies. Since 1960 there have only been 40 reported cases of humans getting rabies from bats. *
princ3_1 12.02.11 - 01:01pm
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Do bats s*ck blood?
Few bats drink blood. However there are some Vampire Bats that live in Central America, South America and Mexico that feed on the blood of warm-blooded animals like horses, cattle and birds. The Vampire bat makes a small cut in a sleeping animal's skin and laps up the blood from the wound. Vampire bats need about 2 teaspoons of blood a day to live. *
princ3_1 12.02.11 - 01:03pm
When can I see bats?
Bats like to come out to eat at night around dusk. Bats flight pattern is much more erratic than birds so look for this pattern. *
princ3_1 12.02.11 - 01:05pm
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Best National Park to view bat flights
Carlsbad Caverns National Park
Carlsbad Caverns has a bat viewing amphitheater where you can watch thousands of bats leave the cave at dusk. I have been to this viewing and it is quite a sight. The best viewing is in August and September. The bats leave for their winter migrations to Mexico in early November and return to Carlsbad Caverns around early May.
Carlsbad Caverns National Park has a colony of around 400,000 Mexican freetail bats. It is indicated by research that Mexican freetail bats have roosted in Carlsbad Caverns for over 5,000 years. The population was estimated in 1936 to be over 8.6 million. It's decline is thought to have been caused by the pesticide DDT.
Rumor has it that Carlsbad Caverns were discovered by a cowboy named Jim White when he followed what he thought was a plume of smoke, which turned out to be millions of bats, coming out of the cave's entrance. *
princ3_1 12.02.11 - 01:14pm
Echolocation
It was found out in the 1930s that bats use high pitched sounds like a natural sonar to locate food and navigate. When these sounds bounce off of objects bats are capable of listening to these echoes and are able to judge distance, movement and size of all objects in their path.
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princ3_1 12.02.11 - 01:15pm
Bat Echolocation Fun Facts
Humans generally can not hear the high pitched sounds that bats make.
Some bats send echolocation sounds though their nose but most bats use their mouth.
Most fruit bats use eyesight and smell for finding food not echolocation. (Of course fruit bat's food is generally not moving.)
Amazingly even when thousands of bats are flying out of a cave they can still use their echolocation with all the noise around.
Different species of bats use different patterns of echolocation frequencies to find food and navigate. This allows scientists to use a detector like the Anabat bat detector to record echolocation patterns for use in identifying different bat species at night and inside dark caves. At Carlsbad Caverns National Park an Anabat bat detector is used to identify which bat species live in an around the caves, and when specific species arrive at Carlsbad Caverns in the Spring and leave in the Fall. See the different echolocation patterns of bats shown to the right. *
princ3_1 12.02.11 - 01:19pm
Lake Mead NRA Echolocation Photo
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princ3_1 12.02.11 - 01:20pm
Wind Cave National Park Ecolocation Drawing
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princ3_1 12.02.11 - 01:21pm
Echolocation Pattern of Mexican Free-tail Bat
Recorded at Carlsbad Caverns National Park.
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princ3_1 12.02.11 - 01:22pm
.Echolocation Pattern of Fringed Myotis Bat
Recorded at Carlsbad Caverns National Park.
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princ3_1 12.02.11 - 01:23pm
Echolocation Pattern of Cave Myotis Bat
Recorded at Carlsbad Caverns National Park.
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princ3_1 12.02.11 - 01:24pm
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jeeit 12.02.11 - 01:40pm
Nice topic Prince. *
princ3_1 12.02.11 - 01:42pm
Thanks jeeit 
and why you are'nt coming? *
jeeit 12.02.11 - 01:43pm
I hv sum prob prince . see you soon. take care. *
princ3_1 12.02.11 - 01:44pm
Ok friend. You also take care yourself. bye 
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princ3_1 12.02.11 - 02:44pm
Jayantee 
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tr00754 12.02.11 - 05:34pm
Hi priya
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tr00754 12.02.11 - 05:39pm
prince *
swtchoco 13.02.11 - 03:09am
Hi prince nice topic..
Hello all friends troo bro how are you? *
