66-million-year-old feather in dinosaur poop may reveal why birds survived the asteroid

Researchers have analyzed a 66-million-year-old fossilized coprolite that contained a remarkably preserved prehistoric feather. The feather originates from an extinct bird species that lived just before the end-Cretaceous extinction event. By studying the structural composition of this plumage, scientists have gained new insights into the insulation capabilities of early avian ancestors. The discovery suggests that these primitive but effective feathers may have provided a significant evolutionary advantage by allowing early birds to withstand the extreme cold of the impact winter triggered by the Chicxulub asteroid. This finding provides a compelling hypothesis for why the lineage leading to modern birds survived the mass extinction while other avian and non-avian dinosaurs perished, highlighting the critical role of physiological adaptations in surviving catastrophic climate shifts.