On Wed, 15 Sep 2010 08:02:36 -0500 in Suzie-Q wrote:
In article ,
joevan wrote:

On Tue, 14 Sep 2010 20:46:03 -0700, "Paddy's Pig"
wrote:

Feather ball? : o)


I know that eagles regurgitate a ball consisting of the
things they can't digest (bones, etc.). Maybe some smaller
birds do the same.

Owls regurgitate pellets as well. They are bones, fur, and, if they owls
are munching on crayfish, chitin.
Biologists will take apart the pellets to determine what the birds
have been eating.
For some species of small tasty things, the bones found in the owl
pellets are the only evidence of the critter's existance.