I've put a bunch of these pets up on the sales market. Here are links to their lots.
http://beastkeeper.com/lot/1/30486/ - Level 30 orange piebald cockatrice, wild, number of nice recessives.
http://beastkeeper.com/lot/1/31415/ - Level 30 orange cockatrice, number of nice recessives, including doubled regen.
http://beastkeeper.com/lot/1/31409/ - Level 23, has acute eyesight dominance and a few other recessives.
http://beastkeeper.com/lot/1/30487/ - level 20 dilute brown cockatrice, double diluted with a few recessives.
http://beastkeeper.com/lot/1/30488/ - level 17 orange cockatrice, quickminded.
http://beastkeeper.com/lot/1/31413/ - level 12, wild, acute eyesight dominance with a nice set of recessives.
http://beastkeeper.com/lot/1/31417/ - level 10, one green stat, decent set of recessives
http://beastkeeper.com/lot/1/31418/ - all black stats, acute eyesight dominant with a few recessives
http://beastkeeper.com/lot/1/31419/ - wild, all black stats, nice set of recessives
http://beastkeeper.com/lot/1/31420/ - one green, regeneration dominant with a few recessives
http://beastkeeper.com/lot/1/31425/ - Black cockatrice, silver/spotted carrier with some decent recessives
http://beastkeeper.com/lot/1/31422/ - Black cockatrice, silver/pieblad carrier, with some nicer recessives
http://beastkeeper.com/lot/1/31426/ - Silver/spotted carrier with some decent recessives.
http://beastkeeper.com/lot/1/31435/ - Counterstrike recessives breeder with regeneration and stench recessives
http://beastkeeper.com/lot/1/31437/ - Wild, low-risk breeder with silver/dilute recessives.
http://beastkeeper.com/lot/1/31431/ - good potential for some decent recessives
http://beastkeeper.com/lot/1/31439/ - Low risk breeder, spitting muscle dominant with silver/spotted recessives
http://beastkeeper.com/lot/1/31434/ - Orange petrifying gaze and quickmind dominant cockatrice.
http://beastkeeper.com/lot/1/31436/ - Black cockatrice, silver/spotted carrier with a few nice recessives
http://beastkeeper.com/lot/1/31429/ - All black stats, Acid Spit recessive breeder
http://beastkeeper.com/lot/1/31438/ - Double incisor dominant with a few decent recessives
http://beastkeeper.com/lot/1/31433/ - good potential for some decent recessives, quickmind dominant.
EDIT: Adding more individuals
http://beastkeeper.com/pet/62498 - Orange cockatrice, wild, 2 green 2 red, Steel muscle dominant
http://beastkeeper.com/pet/62835 - Wild dragon, 2 red, willing to sell for 1500s/equiv
http://beastkeeper.com/pet/64164 - wild uni, 2 green 1 red, willing to sell for 1500s/equiv
http://beastkeeper.com/pet/59820 - Firegland dragon
http://beastkeeper.com/pet/63116 - cockatrice, 1 green stat, double stench, good chance for some nice recessives.
http://beastkeeper.com/pet/63119 - cockatrice, acute eyesight dominant
http://beastkeeper.com/pet/63125 - stench dominant
http://beastkeeper.com/pet/61080 - 2 green stats, some decent recessives
http://beastkeeper.com/pet/61082 - decent counterstrike breeder, guaranteed quickmind recessive and agile paws
I collect and breed cockatrice - See my wanted ad if you're willing to breed or sell your cockatrice!
Do you breed or dabble with cockatrice? NEW! Join my cockatrice breeding group, The Golden Standard! A group dedicated to helping cockatrice breeders and hobbyists meet their goals!
Looking for Pets? Check out my profile! I always have a variety of different species for sale.