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During the time when the passenger pigeon was hunted down to only captives in the zoo, how could the zoo not maintain a small population and keep the species alive? Why did the population slowly die out? I thought a bird can successfully raise multiple young, given the near perfect conditions in captivity in which the people there are trying to keep them alive?

Just a question I ramdomly thought of, so answers would be appreciated! Edit: this is not a duplicate. Birds can have multiple young. That will increase the population success rate.

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  • $\begingroup$ Too small of a population to maintain I believe. $\endgroup$
    – Max0815
    Sep 26 '18 at 16:47

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