The extravagant tail feathers of dinosaur-era birds may have helped to beat their peers, but the fluffy lumps were literally in-flight resistance, according to well-preserved fossil studies.
Researchers said the bird’s tail was really “strange.” It had two long plume feathers that were over 150% of its body length. At the base of the tail, short-feathered, stiff fans are likely to have helped the birds fly, the researchers said.
A 120 million year old fossil was excavated in the Jehol Biota in northeastern China. Cretaceous Fossils preserved in volcanic sediments.Researchers named the bird Yuanchuavis kompsosouraAfter the Mandarin word “yuanchu”, which refers to birds in Chinese mythology, and “avis”, which refers to Latin birds. The species name means “elegant tail” in Greek.
A unique combination of short-tailed fans and two long feathers, known as pintails, is found in some modern birds such as sunbirds and quetzals. But scientists have never found fossil birds or non-avian dinosaurs in that combination, O’Connor said.
Y. Compsoura A member of the Enantiornithes, a group of ancient birds that have become extinct together. dinosaur 66 million years ago. Min Wang, a researcher at the Chinese Academy of Sciences and the lead author of the study, said other enantiornithes had either plumes or tail fans, but not both. “While the tail fan is aerodynamically functioning, the elongated central paired plume is used in a display that reflects the interaction of natural and sexual selection together,” the king said in a statement. Stated.
Virtually toothed jay size Y. Compsoura It could have flown well, but its sexy tail plume is a literal drag and may even have received unwanted attention from predators.
“Scientists call the big flashy tail-like trait an” honest signal. ” Because it is harmful. So if the animal with it can survive with that handicap, it’s a sign that it’s really suitable, “O’Connor said. “A female bird will see a male with a funny tail feather and think,’Dan, if you can survive with such a ridiculous tail, you must have a really good gene.’”
Birds with flashy tails usually do not live in places that require skillful flight. “Birds that live in harsh environments that really need to be able to fly, like seabirds in open environments, tend to have short tails,” O’Connor said. “Birds with elaborate tails that are less specialized in flight tend to live in dense, resource-rich environments such as forests.”
Moreover, Y. CompsouraThe tail suggests that the man was probably his absent father. O’Connor says that it is usually the dull-colored female birds that take care of young birds, as predators are often more likely to notice flashy feathered birds. Also, these males may not have been able to invest resources in raising chicks because it takes time to care for long feathers.
The study was published online in the journal on Thursday (September 16th). Current biology..
Originally published in Live Science.
Bizarre tail on little dinosaur-age bird was literally a drag Source link Bizarre tail on little dinosaur-age bird was literally a drag