I have 4 pullets that are 14 weeks old. I bought a Purina Flock Block because I thought it would relieve some boredom. They have a big run and peck and scratch a lot but they always seems to be hungry for things other than the huge bowl of pellets always available to them! (I think I spoiled them with leftovers! They beg like dogs fed from the table!!!) Then I noticed on the label that the Flock Block is for chickens 19weeks or more. Are they really too young? Should I give it a few more weeks before i put it out? I know it has oyster shell in it and that can hurt chickens who are too young for it but are they too young at 14 weeks? It is so hard to think of them as "too young" for anything, they are HUGE birds!!! I look at the pictures of them as day old chicks and can hardly believe that was them! But as much as I would love to put that block out for them, I certainly don't want to hurt their systems just because they LOOK grown-up! Any advice?