jockeyeba
Crowing
Chickens will 'jump' a six foot fence? Surely they fly, flutter or use their wings in some manner and can't really jump that high.
How will I ever keep them in my yard if I only have a 4 foot tall fence? I don't plan on leaving them out all day unattended. But if they are going to be heading over the fence every time I let them out I may need to rethink this chicken thing.
I don't think you will have a problem with the "heavy" breeds- Wyandottes, BO's,etc......but American Games & Bantams can fly over a 6' fence with ease, they can fly from one end of my backyard to the other easily. I had to put a top on the Bantam pen to keep them in
