Do the feeders allow you to adjust how much feed actually comes out into the tray? If not, look for one that does. The kind that we have is put together with springs and nuts on the middle hanging rod. It allows the reservoir to be raised/lowered against the feed tray so that you can limit the amount of feed that actually gets into the tray at one time.The FF is not something im really prepared to start doing yet, and yes, my feeder has the grate around it. its the red and white plastic feeder you get at TSC. I have started gathering materials to attempt some kind of PVC feeder. Kili, would it be too much to ask for a pic of yours? i was thinking of making some sort of trough style feeder out of a piece of 3.5" diameter PVC i have around the house...but am at a standstill as far as design. I have seen alot of the vertical style with the 45 degree openening at the bottom...but im not a huge fan of that set up...
as far as age and egg production, i have a 2 year old partridge rock that i got from Little wing and she is still laying about 4-5 eggs a week...hasnt shown any signs of letting up.
One thing with the PVC feeders - they can require some maneuvering to get the feed to come out right if you want to make the trough at the bottom. We use them for grit and oyster shell and love them. But even with using several pieces to make the curve more gentle than a straight 90 degrees, I do have to watch and stick my hand or a rod into it to get the grit to flow back into the trough area every so often. Have had some people tell me that they were never able to get their PVC feeders to keep a consistent flow into the trough. Just something to think about if you are worried about keeping feed available all the time, since they will empty the trough quickly if there is food in there, compared to if you were just putting grit or oyster shell in there.