Viral eaglets Sunny and Gizmo, who live in Big Bear Valley in Southern California, are getting ready to take their first ...

A new analysis of a pigeon-sized Archaeopteryx fossil in the collection of the Field Museum in Chicago is revealing an array ...

A Chicago fossil of Archaeopteryx uncovers unknown features, supporting theories of bird evolution from dinosaurs and highlighting its unique flight adaptations.

Entomologists have discovered Papilio solstitius, a new tiger swallowtail butterfly that appears in summer in eastern North ...

For years, paleontologists have debated whether Archaeopteryx could truly fly. The Chicago specimen may finally put this ...

Ornithopters, aircraft that fly by flapping their wings like birds, have long been a staple of science fiction, most famously in Dune. But what if one actually existed? In the 1930s, French engineer ...