Germany-based researchers have unearthed fossils of a new "most bird-like" flying dinosaur species 'Alcmonavis poeschli'. Crow-sized feathered dinosaur Archaeopteryx, discovered in 1861, was widely considered to be the oldest bird-like one for over 150 years. However, a flapping trait likely existing in the new species is present in more recent birds, but not Archaeopteryx, researchers said.