Feather development non-nervous. They have a tubular central shaft called the rachis; coming off either side of the rachis are the veins, which have a series of barbs with interlocking connections that are called barbules. The rachis and attached veins make up the spathe. The opposite of the rachis is the calamus, which anchors the feather to the body and is moved by attached dermal muscles. There are many different types of feathers that mostly follow this basic design with few variations based on evolutionary needs. Feathers are sometimes referred to as “elaborate reptile scales” just as birds are sometimes viewed as
A Bird in a Bonnet A Bird in a Bonnet A Bird in a Bonnet is a 1958 "Merrie Melodies" animated short starring Sylvester and Tweety. Released September 27, 1958, the cartoon is directed by Friz Freleng. The voices were performed by Mel Blanc, Daws Butler and June Foray. Granny visits a 1950's New York City hat shop looking for a new hat. The sales lady has her try on several hats, but Granny seems unsatisfied with each choice (a Napoleon chapeau makes her imitate Napoleon's hand in coat pose and chuckle "Not tonight, Josephine!"). Meanwhile, Sylvester is chasing Tweety outside and Tweety makes his