28 January 2011
Dawn Fine presents this weeks birdblogger: Chris Petrak- writer for a Vermont newspapers birding column, Tailfeathers.
27 January 2011
The closest living relatives of birds, dinosaurs, and pterosaurs are crocodilians. Although these scaly beasts obviously do not have feathers today, the discovery of the same gene in alligators that is involved in building feathers in birds suggests that perhaps their ancestors did, 250 million years ago, before the lineages diverged. So perhaps the question to ask, say some scientists, is not how birds got their feathers, but how alligators lost theirs.