Specimens of Archaeopteryx The end of the feather has an obtuse angle of 110°, while the barbs branch off from the rachis at an angle of around 25°. The barbs branch noticeably into barbules, as in the feathers of modern birds. The base of the feather consists of plumulaceous barbs which are unconnected to one another and result in a down-like appearance. This tuft of down led Griffiths to conclude that "Archaeopteryx" might have been endothermic in that it implies the use of thermal insulation. The feather is clearly asymmetrical, which has been interpreted by many scientists to be a clear indication of
A Bird in a Guilty Cage to cross off birds from his diet, saying to himself that "That one sort of upset my stomach!". A Bird in a Guilty Cage A Bird in a Guilty Cage is a 1952 "Looney Tunes" animated short featuring Sylvester and Tweety. The title is a pun on the song "A Bird in a Gilded Cage". Sylvester is at a store called Stacy's, where he notices Tweety in the window stand. Going through the package slot, he closes the curtains and climbs up to Tweety's cage, who asks him what he's going to do. After asiding to the audience, "How naive