Unidentifiable worms

[ChickenMom2Asa]

Hey everyone,
I was wondering if anyone else have dealt with these tiny yellow worms that vets can't seem to diagnose. Apparently they're not showing up microscopically and it's really frustrating. They are moving little worms. She's been treated for tapeworm and roundworm multiple times but still has them. The vet says it's definitely not tapeworm because they are moving worms. Anyone have any idea on what they are and why no one is able to diagnose correctly?

 

[Eggcessive]

Those appear to be tapeworms. They appear as small white dots and they move. They are very difficult to completely get rid of, probably more practical to control with a regular treatment. Praziquantel is used for tapes with success. It is found in Zimectrin Gold horse paste and other wormers. Cleaning up droppings and free ranging on larger areas of fresh grass may help. Here are some links with dosages to help:
https://www.backyardchickens.com/t/1085197/tapeworm-help (see post 7)
https://www.backyardchickens.com/t/1130035/tapeworms-that-wont-go-away (see post 6)

Tapeworms (courtesy of Flyte so Fancy)

Tapeworms are less common and are segmented, ribbon-like, worms. They attach themselves to the wall of the intestine by burying their heads in the lining of the intestine.

Their eggs are carried by slugs and snails so free-ranging birds are more susceptible than indoor birds. Heavy infestation can reduce the bird's ability to fight other infections.

Reproduction is from segments of the worm that break off and are passed through the chicken in its droppings where it contaminates the ground for other birds to pick up. They are very hard to see with the naked eye and have a life cycle of 6 weeks