Roughly 66.8 million years ago—not long before the end-Cretaceous extinction that wiped out all non-avian dinosaurs—a diminutive, quail-sized bird met an unfortunate and untimely end.
But the relatives of this pint-sized creature—a newly described fossil cheekily dubbed “Wonderchicken”—lived on, helping to seed the enduring, diverse lineage of birds that still fills the skies of the modern world.
Birds first showed up on the paleontological scene around 150 million years ago, making their debut with toothsome terrors like Archaeopteryx that likely resembled their more reptilian-looking dinosaurian ancestors, reports George Dvorsky for Gizmodo. Sometime during the Cretaceous, though, our feathered friends began to shed their teeth, bony tails and clawed wings in favor of more docile traits. But evidence of these ancient avians has been scant, leaving a gaping hole in the origin story of modern birds.
https://www.smithsonianmag.com/smart-news/67-million-years-old-oldest-modern-bird-ever-found-was-natural-turducken-180974460/