Pennaceous feather Pennaceous feather The pennaceous feather is a type of feather present in most modern birds and in some other species of maniraptoriform dinosaurs. A pennaceous feather has a stalk or quill. Its basal part, called a "calamus", is embedded in the skin. The calamus is hollow and has pith formed from the dry remains of the feather pulp, and the calamus opens below by an "inferior umbilicus" and above by a "superior umbilicus". The stalk above the calamus is a solid "rachis" having an umbilical groove on its underside. Pennaceous feathers have a rachis with "vanes" or "vaxillum " spreading
I Am a Bird Now following people contributed to "I Am a Bird Now:" !scope="row"|Worldwide I Am a Bird Now I Am a Bird Now is the second album by New York City band Antony and the Johnsons. It won the Mercury Prize on September 6, 2005. After winning the prize, the album shot up the UK albums chart from #135 to #16 in one week, the biggest jump in the history of the Mercury Music Prize. As of September 2011, UK sales stand at 220,000 copies. The album features guest appearances by Rufus Wainwright ("What Can I Do?"), Devendra Banhart, Joan Wasser and by