**Chinese Velociraptor Cousin Had a Taste for Birds**
In a remarkable discovery, researchers have unearthed fossils of a small carnivorous dinosaur from the Cretaceous Period, approximately 120 million years ago, in what is now northwestern China. This dinosaur, named Jian changmaensis, appears to have thrived in a lakeside ecosystem teeming with a variety of avian species, providing ample opportunities for predation.
The fossils of Jian changmaensis were found in Gansu Province, a site known for its rich deposits of well-preserved bird remains. The dinosaur was about the size of a barn owl and is closely related to the Velociraptor, a species that has captured public imagination largely due to its portrayal in popular media. However, paleontologist Matt Lamanna from the Carnegie Museum of Natural History emphasized that Jian would have looked quite different from the scaly depiction of Velociraptor in films like "Jurassic Park." Instead, Jian likely sported long feathers on both its forelimbs and hindlimbs, resembling a small Velociraptor with adaptations for gliding.
“Jian would look like a small Velociraptor – the real Velociraptor, not the scaly thing in ‘Jurassic Park’ – but with long feathers on both the forelimbs and hindlimbs instead of just the former,” Lamanna explained. He further described Jian as a “Velociraptor trying to be a flying squirrel,” highlighting its predatory nature and unique adaptations for ambush hunting.
The discovery includes five shoulder and arm bones that exhibit distinct characteristics, setting Jian apart from its close relative, Microraptor, which lived around the same time. While the remains are incomplete, researchers believe Jian likely shared some anatomical similarities with Microraptor, known for its feathered limbs that created the illusion of having four wings.
Jian's ecological role appears to have been that of an opportunistic predator, preying on the diverse bird population that inhabited its environment. According to paleontologist Jingmai O’Connor from the Field Museum in Chicago, Jian likely stalked and ambushed birds that were preoccupied with foraging for food. The dense avian population would have provided a reliable food source, though researchers suggest that seasonal variations may have necessitated a varied diet, potentially including lizards, mammals, and fish.
The fossil evidence indicates that Jian may have engaged in behaviors similar to those of modern-day owls, which regurgitate pellets containing indigestible parts of their prey. Lamanna noted that some of the fossils found at the site were broken bones compressed into pellets, suggesting that Jian may have exhibited similar feeding habits after consuming birds.
Jian changmaensis belongs to a group of dinosaurs known as theropods, which includes all meat-eating dinosaurs. While many theropods were large, such as the Tyrannosaurus rex or Spinosaurus, there were also smaller species that occupied ecological niches akin to those of modern weasels or wolverines. This diversity highlights the adaptability and evolutionary success of theropods during the Cretaceous Period.
Birds themselves evolved from small feathered dinosaurs during the Jurassic Period, with the earliest known bird, Archaeopteryx, dating back approximately 150 million years. In Jian's ecosystem, various bird species would have coexisted, including the pigeon-sized Gansus, which likely had webbed feet and teeth, as well as other species such as Feitianius, Changmaornis, Avimaia, Novavis, and Meemannavis.
The evolutionary lineage that includes Jian changmaensis and Microraptor is particularly significant, as these dinosaurs are closely related to the earliest birds. Lamanna remarked on the proximity of these species to the origins of avian life, stating, “They’re extraordinarily closely related to the earliest birds such as Archaeopteryx – really, just about as close as you can be to being a bird without actually being a bird yourself.”
As researchers continue to study the fossils and the ecological dynamics of the time, the discovery of Jian changmaensis adds to our understanding of the complex interactions between predators and prey in ancient ecosystems. The findings, published in the journal *Annals of Carnegie Museum*, underscore the importance of paleontological research in unraveling the history of life on Earth and the evolutionary pathways that led to the birds we see today.