These are placed one foot from both the top and bottom to allow for air circulation and light. The birds are grouped according to species and noise volume. African Grays are in the quiet end with the big Macaws and Cockatoos in the noisy end. Our flock settled in to their new home very quickly. The birds seem happy and healthy.
Maintenance seems to have been reduced as far as is possible.
Perhaps this time we really have achieved perfection, but only time will tell.