Scientists theorize that birds evolved from dinosaurs. This theory for the evolution of birds was brought about by the discovery of a fossil species possessing feathers. This fossil species called Archaeopteryx lithographica dates back to 150 million years ago and is thought to have evolved from dinosaurs called theropods. Archaeopteryx lithographica had two strong legs […]
The scientific name of the Eastern bluebird is the Sialia sialis. The bluebird is a small thrush and is 5.5 inches long with a narrow black bill. The bluebird found in Southwestern United States is lighter in colour than the Eastern bluebird elsewhere. You will often see the bluebird in open patches of ground like […]