Researchers discover oldest-known voice box of bird in Antarctica
The oldest-known vocal organ of a bird has been found in an Antarctic fossil that is related to ducks and geese and lived during the age of the dinosaurs, more than 66 million years ago. The discovery of the Mesozoic Era vocal organ -- called a syrinx -- and its apparent absence in non-avian dinosaur fossils of the same age indicates that the organ may have originated late in the evolution of birds, and that other dinosaurs may not have been able to make noises similar to the bird calls we hear today. Click here to learn more.
Provided by the National Science Foundation