I haven't encountered this yet in my yard but a chicken friend of mine ended up caging all of her rose bushes b/c her mini-flock was devouring them so fast!
My BA's are almost 4 weeks old. We're considering Dominiques, Easter Eggers, and Welsummers. We want to put them together before there is a huge age difference. We have 9 BA's and our run is 6ft by about 50ft.