my 25 chicks are almost 2 weeks old and i'm trying to find out at what age can i start giving them treats. when i visit the brooder, they always seem to be happy to see me, but i never have anything fun to give them and it bums us all out (the chicks and myself). i figure they have to be getting bored with the chick feed, but i've heard they should eat the chick feed exclusively till they are 4 weeks old and then you can start giving them other stuff. is that the case? also... i am under the impression that i need to give them grit when i incorporate other foods so they can digest it better. i read someones post on here that they give them sand and it works the same as grit. is that right? cuz i have plenty of sand on hand. i think they are already trying to get grit cuz they are pecking alot at the cement block wall in the coop. either that or they are trying to pull a "prison break" on me. thanx for the advice.