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What is the approximate number of ivory billed woodpeckers left in the species?
Wiki User
∙ 10y ago
It's hard to say, but almost surely less than 50 birds, if that.
Wiki User
∙ 10y ago
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How many animals are left in a species before being placed on endangered list?
There are many factors determining this status. Such as, is the nominate animal predator or prey? Prey species always outnumber their predators, so if a deer for example, sees the predator population drop substantially, the deer may overpopulate, and cause disease to spread easily among them. To be endangered, numbers of the species must drop to levels where the total population would have trouble sustaining its numbers, as in tigers or pandas. There is really no set number for endangerment, as some species are more common than others in an ecosystem. One example is the pileated and ivory billed woodpeckers. Both are very large woodpeckers, and occupy similar niches in the environment. The pileated is still quite common, while the ivory billed is critically endangered. But, from historical records, we see that the ivory bill was never an extremely common bird, the population was probably in the hundreds of thousands at its peak, while pileateds still number in the millions today. The ivory bill is more specialized in its habits, and when many of the southern forests were cut, led to the species' decline after the Civil War. So, to sum up, if the pileated population dropped to say, 10,000, it would certainly be put on the endangered list. But if the ivory billed population increased to 10,000, it would be delisted as endangered, and put in as least concern.
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Ants, fish, frogs, mice, moles, rats, salamanders, shrews, skunks, toads, wasps and woodpeckers are predators of beetles. The exact natural enemy depends upon the precise species of beetle. Members of other and of the same Coleoptera insect order species also number among a beetle's predators.
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