The tiny fossil of a juvenile enantiornithe bird from the Early Cretaceous La Huérguina Formation of Spain is helping paleontologists understand how early birds came into the world in the age of dinosaurs. Artist impression of a juvenile enantiornithe bird. Image credit: Raúl Martín. The 127-million-year-old fossil is a chick from a group of prehistoric birds called Enantiornithes. The specimen consists of a nearly complete skeleton; the feet,...