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Do you know how long wild birds live?
Bird mortality is generally highest in the first year after hatching, and ornithologists estimate that 80-90 percent of baby birds do not live to maturity. Considering one pair of birds alone could have 15-20 baby birds each year, only a few may reach the age of adulthood. If mortality was not dramatically high, bird overpopulation would be a serious issue. A number of factors, including disease and predators, affect mortality. However when ornithologists were able to look at banded birds (birds they marked with a plastic band on the birds foot) over a long period of time, they were able to record average lifespans for various wild birds.
Longest bird lifespans (recorded from banded birds):