Eating their own poop...

[Mettomom]

I have three 6 week old chicks. They eat their feed, and we have started to give them treats. Apples in small pieces, grapes, and they love corn. In the past few days the are eating their own poop... Is this normal? could this be that they need something more in their diet?
appreciate any feedback

 

[Judy]

They all eat some poop. When a hen raises chicks, the chicks get some immunity from eating some of their mama's poop.