Pin feather protective peripheral sheath, longitudinal barb ridges, and growth plates. Over time these barb ridges lengthen helically, branch to create barbs and barbules, and fuse to form the rachis or central shaft. Moreover, the barb plate further differentiate into hooklets and cilia, while the marginal and axial plate die to form the intervening space within the feather structure. During moulting, a bird may get careless and begin to chew at its feathers and might accidentally damage a blood feather. To prevent this, it is necessary that the bird is given chewing toys so that it does not chew at its own
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,