Sydney Acres
Songster
I've been told that the need for calcium creates a craving in layer hens to consume the oyster shells, so they tend to eat a lot of them during their laying cycle, and much less during their off cycle. I don't know if that's true or not, but that would explain the behavior I see while my hens are laying. Most of them (not all) will frantically run to the oyster shell area or feeder when they are first let out in the morning when laying. During their rest periods, the oyster shells are just a mere curiosity. My roosters like to go to the oyster shell area, hold up a shell and call the hens, but don't tend to eat much of the shells themselves. I jokingly call that the chicken version of the dinner date -- the rooster feeds the hen and expects sex afterwards. It seems to work for them!X2. I feed Flock Raiser year round and offer oyster shell on the side. I just find it easier to not change feeds as I am usually hatching 3-4 times a year. Because of the heat that we are experiencing right now, I'm wetting the feed in pans for them rather than using the feeders so much (keeping feeders full though in case they want some dry). The difficulty with this method is that they tend to walk in the pans, squish (is that a word?) down the food, packing it into the bottom of the pan where they can't eat it. I don't give the cockerels any oyster shell, it doesn't seem to affect them not having it, but then again I've yet to get a cock bird to live beyond a year due to the neighborhood dogs. I should say though, that when they are in with the girls to breed, they can certainly have some of their oyster if they want it....I don't recall ever seeing them take any though.
My turkey hens seem to dislike the layer pellets, but will consume huge amounts of oyster shells, so I don't even bother with layer pellets for them anymore.