Why Adult Sex Ratio Controls Bird Promiscuity and Parenting—Not the Reverse
Nature World News | 28.04.2026 16:28Bird populations worldwide reveal a clear pattern: demographics dictate mating habits and parenting roles. Skewed adult sex ratios emerge from early survival differences, pushing the rarer sex toward promiscuity while the abundant sex ramps up care efforts. This dynamic plays out across hundreds of species, reshaping how birds breed and raise young.
