Really, it could be many, many types of bugs. The fact that they were on the eggs rather than the bird makes me think flies, not mites. And yes, some flies are teeny tiny. As jjthinkagain said, calm down.
Mites that live on birds do not live on mammals--we taste nasty to them. They may briefly "sample" a taste, but that will be about all. Clean out all the litter. In the future, make sure that all shavings are kiln dried--that will kill any bugs or their eggs. Get a long-term pesticide and thoroughly spray down the barn. Then replace with fresh litter. Bathe the chickens in flea/tick shampoo for dogs or cats, or dust with sevin or permethrin. Treat them with ivermectin pour-on.
Then go find a kids science book about bugs, that tells about why they are a necesary part of our environment. I would recommend The Magic School Bus series or the Let's Read and Find Out series, although offhand I don;t have a specific book in mind.
Mites that live on birds do not live on mammals--we taste nasty to them. They may briefly "sample" a taste, but that will be about all. Clean out all the litter. In the future, make sure that all shavings are kiln dried--that will kill any bugs or their eggs. Get a long-term pesticide and thoroughly spray down the barn. Then replace with fresh litter. Bathe the chickens in flea/tick shampoo for dogs or cats, or dust with sevin or permethrin. Treat them with ivermectin pour-on.
Then go find a kids science book about bugs, that tells about why they are a necesary part of our environment. I would recommend The Magic School Bus series or the Let's Read and Find Out series, although offhand I don;t have a specific book in mind.