They have 6 birds that are eight months old (4 pullets, 2 cockerels) - I think that's where the confusion is. Everyone is seeing the number 8 in the OP and thinking that's the # of birds, but they wrote the word "six" ("8-month-old")...I'm confused
Do you have six birds total, of which two are cockerels? Or do you have six pullets plus two cockerels?