Overcrowding on AREA isn't always the problem. If you only have one feeder or several feeders too close together, they can be 'overcrowded' because the more dominant birds will push away the less dominant. Also, housing space, roosting space and watering space can be issues all in the same way. If for some reason the anconas feel they need to defend their right to the food/water/housing, then they will. Just because they have lots of floor space doesn't always mean that you will eliminate issues. Spreading feed, water, and housing over a larger area by offering multiple sources for them can help.