Hi, I am trying to figure out when is the best time to cull the chicks for breeding stock. Does anyone have a method? It is hard to tell who is male and female for quite awhile and by the time I figure it out, then they are about 6 weeks old. I am also wondering if anyone lets the dual purpose birds that they are going to cull, grow and then butcher them or if it is more cost efficient to just cull. About what age do you process the dual purpose culls? Any info is greatly appreciated, thank you.