Female mammals usually outlive males, but a 27-year study found the pattern was reversed among dozens of North American bird species
[ad_1] Female birds have shorter lifespans than male birds, researchers find Female mammals usually live longer than males, but a 27-year study of North American birds has found the opposite pattern in birds.Researchers at the University of California, Los Angeles (UCLA) analyzed more than 563,000 bird-banding records and found that adult female birds had a…
