What does chicken poop/ urine supposed to look like for healthy

[jen34chickies]

Thank you for posting that website! I was thinking my chickens poo didn't look right. After I had one chick die I'm over cautious so this was great to see that my chicks are ok.

 

[Suprise-Chicks]

Can someone tell me if my hen is sick?

I can't find a poop like this, she has been eating mulberries but it the white stuff that is worrying me.