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
What a Terrible World, What a Beautiful World What a Terrible World, What a Beautiful World What a Terrible World, What a Beautiful World is the seventh studio album from The Decemberists, released on January 20, 2015. The album's title comes from a line in the song "12/17/12", a reference to the date of Barack Obama's speech in response to the Sandy Hook Elementary School shooting and lead singer Colin Meloy's conflicting feelings about the shooting and his happy personal life. "What a Terrible World, What a Beautiful World" received mostly positive reviews. It currently has a metascore of 77 and user score of 8.1 from Metacritic. "The