worms?

[nlyles]

One of my little roos has decided that he likes sleeping in the nesting box. This morning when I was cleaning the litter I noticed a bunch of short round worms that are mostly white with some black. Checking the other chicken poo it doesn't appear that there are any other signs of worms just the nesting box where this little roo is sleeping. Any ideas what kind of worm this could be?

Thanks