125mn year old wing reveals evolution of flight

London: A new study of a 125-million-year-old wing of a primitive bird has revealed that some of the most ancient birds were capable of performing aerodynamic feats in a manner similar to many birds existing now.

The right wing of a 125-million-year-old bird from central Spain preserves not only the articulated bones of the forelimb but also abundant remains of the plumage and of the soft-tissues of the wing.

“It is very surprising that despite being skeletally quite different from their modern counterparts, these primitive birds show striking similarities in their soft anatomy,”

said lead author Guillermo Navalon from University of Bristol's school of earth sciences. Birds have an enormously long evolutionary history.

The earliest of them, the famed Archaeopteryx, lived 150 million years ago in what is now southern Germany. However, whether these early birds were capable of flying and, if so, how well has remained shrouded in scientific controversy.

The new study documents an intricate arrangement of fibres which matches anatomically with a complex network of ligaments, muscles and tendons present in modern-day birds.

This network ensures the position and controls the fine adjustments of the wing's main feathers, allowing living birds to fly efficiently and master the sky.