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
Bird on a Wire (Tim Hardin album) the US. The sessions included Joe Zawinul, Alphonse Mouzon, and Tony Levin, the core of the rhythm section of the band Weather Report. "Bird on a Wire" was re-issued on CD by Sony in 1989 and Sony Japan in 2005. In his review for Allmusic, music critic Bruce Eder wrote "The singing is exquisite, poignant, and powerful and the production is as tasteful and eloquent as any in Hardin's output. This might not be the place to start listening to Tim Hardin (though there are worse places for that as well) in terms of finding out what he was about,