Convergent Evolution
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<birdfyi-glossary slug="convergent-evolution"></birdfyi-glossary>Definição
Independent evolution of similar traits in unrelated bird lineages, such as the similar body plans of swifts and swallows.
Explicação detalhada
Convergent evolution has produced some striking parallels in birds: unrelated swifts and swallows have evolved similar streamlined bodies and wide gapes for aerial insect catching; unrelated cormorants and darters have evolved wing-drying behavior and similar fishing methods; New World vultures and Old World vultures both evolved bald heads and soaring flight independently. DNA evidence is the primary tool for distinguishing convergence from true evolutionary relatedness.