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And many bats live in the understory! Different bats eat
insects, fruit, pollen, blood, and even fish! These white-lined sac-wing bats
spent the day on my ceiling in Costa Rica. |
These bats are spending the day sleeping uinder a palm
leaf, at Tortuguerro N.P., Costa Rica. |

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We saw palm leaves cut and bent like this throughout the
understory in the forests of Belize. Why were they like this? They were chewed
and bent!
This is a "bat-tent", probably made by the white-lined
fruit bat or the ghost bat. Many bats also make tents out of wide banana or
heliconia leaves. This way they can roost in a different location each day to
avoid predators.
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You may wonder why you are looking at a picture of bird
droppings.....
In this very interesting adaptation, these caterpillars,
like several species in North America, look just like bird droppings. What
better way to avoid being eaten by a bird? No self-respecting bird would eat
bird doodoo! |

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This acacia tree trying to grow up through the understory
needs a competitive advantage. To get one it produces little yellow "protein
buds" on the tips of its leaves and has small openings in the hollow
thorns.
How would this help this plant? |
The protein buds provide food for a certain specie of
ant, and the thorns provide shelter.
The ants, which you can see on the right side of this
photo, don't need to ever leave the tree. In return, they protect the tree from
being eaten by animals large or small, and even kill vines attempting to grow
up the tree. About 40 species of trees in the rainforest have developed such
symbiotic relationship with ants! |

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At night, under the leaves of the understory, you may
find frogs singing their hearts out to attract a mate!
Click
here to hear
frogs at night in the Amazon (RealAudio required). |
Another pollinator, of course, is the bee! These are tube
bees, tiny little non-stinging bees found in small opennings in trees. This
hole is about the size of a dime!
Tube bee, or not tube bee? That is the
question! |

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Watch out for the snake! Snakes may be anywhere in the
understory shrubs or trees.
But this is just one of the many vines making its way up
through the understory. |
This time it's a real snake! This vinesnake sits
patiently waiting for dinner to come to it.... It took me a few minutes to see
this snake, even though it was six inches in front of my
face! |

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