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If you’re going to use the eggs for table purpose only, you don’t need males in your coop. On other hand, if you do require eggs for hatching, then you should have at least one male for 10-20 females in your chicken coop.
My advice for the first timers of raising chicken is that they don’t require roosters for their backyard farm because the roosters not only going to produce fertilized egg, but also waking up to the lovely sound of a rooster crowing in the morning. Moreover, the roosters crow throughout the day, which will bother you and your neighbours.