Feather These barbules have minute hooks called barbicels for cross-attachment. Down feathers are fluffy because they lack barbicels, so the barbules float free of each other, allowing the down to trap air and provide excellent thermal insulation. At the base of the feather, the rachis expands to form the hollow tubular "calamus" (or quill) which inserts into a follicle in the skin. The basal part of the calamus is without vanes. This part is embedded within the skin follicle and has an opening at the base (proximal umbilicus) and a small opening on the side (distal umbilicus). Hatchling birds of some
A Bird in a Bonnet ends with the word "Oshimai!". "A Bird in a Bonnet" is one of six cartoons scored with stock music by John Seely from the Capitol Records Hi-Q library because of a musician's strike in 1958; the others are "Weasel While You Work", "Hip Hip-Hurry!", "Hook, Line and Stinker", "Gopher Broke", and "Pre-Hysterical Hare". This cartoon is the only Friz Freleng cartoon to have a Seely score; two others were directed by Chuck Jones (both starring Wile E. Coyote and Road Runner), while the remaining three were helmed by Robert McKimson. A Bird in a Bonnet A Bird in a Bonnet