It's easier to tell what it isnt lol, definitely not canker nor any poultry worm nor egg. I have no photos of what they might be. I suspect they might just be some type of microscopic debris they've eaten.
I'll see if @Sue Gremlin will take a look. She is a Parasitologist and I know she likes a challenge.
I'll see if @Sue Gremlin will take a look. She is a Parasitologist and I know she likes a challenge.