- Apr 4, 2013
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Check your temps... too high a temp and you'll get more cockerels than pullets. It may only be a decimal point or two, but it's enough. Try to keep it at the 99.5 but no lower than 99.2 for more pullets.Last big hatch, I had 2/3 little roos. No exaggeration. I did a couple small hatches early in the year then a large one (large for me). I forget the exact number but 2/3 of nearly 60 babies that hatched were cockerels.