Female birds have shorter lifespans than male birds across 35 North American species, researchers find
A UCLA study of over half a million banded birds across 35 North American species reveals that females have a 12.4% lower survival rate than males. This finding contradicts the trend seen in mammals and highlights a significant, understudied biological phenomenon.
Why it matters
Understanding the factors behind female bird mortality is crucial for conservation efforts and maintaining population stability in various ecosystems.
by Holly Ober, University of California, Los Angeles
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