What just came out of my chicken?

[PeckinChickens]

Went out to get the eggs this afternoon and this horror was waiting in one of the nesting boxes for me. What the heck is this?

Mods, feel free to move this if I've 'laid' this in the wrong forum.

 

[casportpony]

IIs there poop inside of it?

 

[PeckinChickens]

Some, but looked like it was fibrous, almost like grass or straw.

 

[aart]

Probably ate too much grass and it went thru undigested.