On the 4th day of Christmas, ScienceforLife gave to me:
*In 2102 the palaeontology world was abuzz as more fossil evidence of feather-clad dinosaurs was uncovered. The largest feathered dino Yutyrannus huali (‘beautiful feathered tyrant’) was reported in April 2012, joining other feathered specimens the four-winged Microraptor, and small beasts Dilong and Guanlong. That birds evolved from small, meat-eating dinosaurs is now generally accepted; the discovery of large dinosaurs with feathers has reopened debate as to how feathers offered survival advantage, and how and when flight evolved.
[photo thanks to Dendroica cerulea on flickr]