@unpublished{orgprints10295,
           month = {March},
           title = {Between Sheds Migration: establish whether, and if they do how far birds migrate between field sheds on the Sheepdrove Organic Farm silvo-poultry production system
},
          author = {Vanessa Pegg and Bruce Pearce},
            year = {2004},
             url = {http://orgprints.org/10295/},
        abstract = {Sheepdrove Organic Farm was concerned about the possibility of birds of different ages mixing within their silvo-poultry system resulting in variation in the bird weights at depletion.  A trial was established to investigate whether birds did migrate and if so how many and how far.}
}