Pipping

from The Collaborative International Dictionary of English v.0.48

Pip \Pip\, v. i. [imp. & p. p. {Pipped}; p. pr. & vb. n.
   {Pipping}.] [See {Peep}.]
   To cry or chirp, as a chicken; to peep.
   [1913 Webster]

         To hear the chick pip and cry in the egg. --Boyle.
   [1913 Webster]