Lifespan and Demography
Although the Common Cuckoo's global population appears to be declining, it is classified of being of Least Concern by the International Union for Conservation of Nature. It is estimated that the species numbers between 25 million and 100 million individuals worldwide, with around 12.6 million to 25.8 million of those birds breeding in Europe. The maximum recorded lifespan of a Common Cuckoo in the United Kingdom is 6 years, 11 months and 2 days.
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