Humans Are Driving Birds to Extinction, Group Warns

The disappearance of native birds is often heralded by the arrival of alien animals, says Youth. The dangers of such introductions—both deliberate and accidental—are evident on remote islands. Having evolved over hundreds of thousands of years to suit the conditions of their isolated homes, many island birds are ill-equipped to cope with outsider competitors or predators.

For instance, Hawaii's endemic bird species are being put to flight by a variety of invaders, including cats, rats, feral pigs, and mongoose.
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