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ABSTRACT:
Habitats around the world, especially in the tropics, are being fragmented at a rapid rate, causing
a tremendous loss of biodiversity[1]. For example, 12% of the approximately 10,000 bird species
are threatened with extinction in the next 10 to 100 years, and another 8% are near-threatened[2].
This loss of species is likely to result in the collapse of significant ecosystem processes and free
ecosystem services to people[3], such as pest control by insectivorous birds. Tropical forest
insectivorous birds, such as antbirds, woodcreepers, and wrens, present a good example of an
important, species-rich group of small, noncharismatic organisms who do not get much public
attention, but whose demise may have significant negative ecological and financial consequences.
They are among the species most likely to go extinct as a result of forest fragmentation[4] and
their loss may result in insect pest outbreaks in tropical forests and surrounding agricultural areas.
Finding out the causes of the disappearance of understory insectivores may help explain the
disappearance of the other small, short-lived, and specialized bird species that comprise the
majority (65%) of threatened bird species in the world[5].
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STATISTICS
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