Articles tagged with Modern Birds
The newly described fossil, Mirarce eatoni, is the most complete enantiornithine bird skeleton found in North America, providing insights into the evolution of flight. Its unique features, including quill knobs and a deeper keel on its sternum, indicate that it was a strong flier.
A 75-million-year-old Mongolian oviraptor fossil preserved the original keratinous claw sheath that covered its digits. The study adds to evidence that organic materials can preserve over time, revealing details about how proteins might be preserved.
A Queen's University researcher has challenged traditional explanations for the origin of birds' flight. His findings suggest that wings may have initially served signaling or sexual selection purposes rather than flying.
A newly discovered enantiornithine bird from the Early Cretaceous period in China provides the oldest unambiguous record of an avian gastric pellet. The fossilized remains include a fish-rich pellet, suggesting that some Early Cretaceous birds had evolved modern avian digestive features.
A study led by CU Denver professor Martin Lockley found evidence of dinosaur mating displays in 100 million-year-old rocks. The discovery provides physical proof of courtship behavior in dinosaurs, filling a missing gap in our understanding of their behavior.
A new study found that modern birds arose in what is now South America around 90 million years ago. The research suggests that birds survived the Cretaceous-Paleogene extinction event and then diversified during periods of global cooling, with diversification rates increasing as the climate cooled.
Researchers discovered that some dinosaurs, like oviraptorid theropods, had intermediate body temperatures between endotherms and ectotherms. They found evidence of higher temperatures in fossil eggshells, suggesting these animals may have been more active than previously thought.
A new study published in PNAS sheds light on the functional importance of dinosaur beaks, revealing they helped stabilize the skull structure during feeding. The research, led by Drs Stephan Lautenschlager and Emily Rayfield, used CT scanning and computer simulations to analyze a therizinosaur's beak.
Researchers at George Mason University and University of Lincoln found that dinosaurs likely shared incubation duties with both moms and dads, contrary to previous claims of male-only care. This new analysis helps understand the evolution of incubation in birds and sheds light on dinosaur reproductive behavior.
Researchers found that modern birds are living dinosaurs with skulls similar to those of their juvenile ancestors. By analyzing fossil evidence and CT scans, they discovered that a change in developmental timing led to the evolution of birds, enabling them to retain physical characteristics of baby dinosaurs into adulthood.
New research from Montana State University reveals how dinosaurs like Velociraptor and Deinonychus used their famous killer claws to latch onto prey, proposing a new behavior model for the evolution of flight in birds. This study suggests that the enlarged sickle-claw on digit two was used as an anchor to prevent escape, and that preci...
A new study using molecular genetic data confirms that modern birds originated more than 100 million years ago, contradicting earlier fossil-based estimates of around 60 million years ago. The analysis suggests that both the fossil record and molecular clock methods have limitations in dating biological events.
Fossil specimens of a near-modern bird, Gansus yumenensis, found in northwestern China, indicate that early birds likely evolved in an aquatic environment. The findings suggest that these early modern birds were similar to ducks or loons, with webbed feet and bony knees.
Researchers discovered that modern birds can form teeth in embryonic stages with similar developmental positions to mammals. The talpid2 strain of chicken harbors a genetic change allowing this process.
A team of researchers has discovered a new species of early bird, Apsaravis ukhaana, in Mongolia, which sheds light on the evolution of modern birds. The fossil, dated to 80 million years ago, reveals that early modern birds were not restricted to near-shore environments and were instead small terrestrial flyers.
Researchers found similarities in bone structure among coelurosaurs, suggesting birds evolved from a group of dinosaurs. The study also sheds light on the debate over dinosaur metabolic rates, finding irregular collagen fiber bundles similar to those in modern birds.
Fossil evidence suggests that reptiles existed before dinosaurs and sported feathers, challenging the theory of bird evolution from dinosaurs. The discovery of 'Longisquama' features key clues indicating that its appendages were indeed feathers.
The discovery of ancient fossils in central Asia shows that birds' ancestors had the earliest known feathers, which predate dinosaurs. This challenges the long-held theory that birds evolved directly from theropod dinosaurs.
Chinese and U.S. researchers have discovered a previously unknown species of primitive bird with the world's oldest surviving horny beak, dating back 130 million years. The discovery adds weight to the argument that birds descended from earlier reptile ancestors rather than dinosaurs.
A three-year study in Illinois found that planned burning in oak savannas enhances certain bird species, such as the red-headed woodpecker and northern oriole. The findings suggest that fire can select against some species but benefit others, leading to a more diverse bird community.
The discovery of a 130-million-year-old fossilized bird hatchling provides significant insight into the early evolution of birds. The hatchling's primitive skull contains teeth, while its advanced features suggest that flight took precedence in early bird development.
Scientists have discovered that Archaeopteryx, the famous link between birds and reptiles, did not give rise to modern birds. Instead, they appear to have descended from a different, unknown ancestor with many characteristics of modern birds. This discovery challenges the classic view of bird evolution.