What in the world are these little tan-colored buggers? They move, and they move well, in the fashion of a leech or inch worm; stretching forward (the longer looking ones in the photo) and then pulling their back ends up (the shorter looking ones). They don't last long, though. After about 1-2 minutes after the poo is dropped, they're all immobile (presumably dead). They are also only on the outside of the poo (yes, I checked; yes, gross). The part that is stymieing me is that we take fecal samples in for vet analysis twice per year. We just took a sample in 5 weeks ago and got a hit on roundworm eggs/larvae. So we treated the entire flock with 0.5cc/bird (SF) of SafeGuard (10% fenbendazole suspension), and then retreated with the same 9 days later. No issues or problems observed during or after treatment. It didn't seem to phase any of them whatsoever. Now,it's usual for me to take a look at a fresh poo if I'm near a chicken that just dropped one. It's just a habit from growing up with dogs, cats, and rabbits and often doing visual screening of their droppings for evidence of potential problems. So 2 nights ago, one of my hens dropped this gem and voila! THESE. They don't look/move like any roundworm or tapeworm I've ever seen, and stalking the rest of the flock around since then, it looks like we've only got 1 hen out of 9 chickens doing this. The entire flock is eating/drinking/behaving perfectly normal, though 3 of them (including the one dropping these critters) are molting. So do any of you know what these are and what to treat them with? Is it even alright to treat during a molt, or should I wait until they're done molting since it's not apparently causing any harm at the moment? Thanks!