hi there , i ve been keeping chickens for about three years now .. 10 hybrids which are 2 years old 10 ex batts which are about 2 years old 6 pol about 20 weeks old all three groups are kept in seperate groups.. we have now got a cockeral he is kept seperate at moment we have only had him 2 days ,im not sure which hens to put him with, if any are suitable ... im not sure wot ages are best? ben the cockeral is 1 year old ... he s a buff X silkie any help would be most apprieciated many thanks