Hi, I have 2 week and 3 week chicks and on warmer days I take them on little "filed trips" outside for a couple hours outside for fun and exercise. They have chick starter and every day I have introduced a snack that I bought at the store...I cannot remember the name but its a roll on a stand and it's for chicks I limit it to like 3 minutes because they tear that thing up like nobody's business! Now when they go outside, I cannot tell, except one time when one of them got a worm, if they are just pecking, or actually eating things. If they are, do they still need grit? None of the chicks will go near the grit, but they do like sand. One chick won't even eat the sand and I noticed some runny poops yesterday and today, and wasn't sure if that is what is going on. So, if they are eating outside, from the ground, do they need sand/grit?