Is this poop of concern?

[Linnre]

I have 3 chicks 3 1/2 weeks old. They are in a bin inside with a brooder, food and water etc. I had them out this morning and they all seem fine. We noticed this in the bin this morning after they had been out and put back. I have read about cecal poop and hope it is normal but I don’t know much about it. I am new to chicks. I attached a pic of my three girls taken last night as well as a picture of the poop. I hope someone can help.

 

[Wyorp Rock]

Looks like intestinal shedding.

Is your coop ready for them? You may want to consider brooder outside. The tote looks a bit cramped.

 

[Linnre]

Thank you! I hope you are right. The bin is long. They have some room at the other end to hop around. I do hope to figure something better out soon.