4 week old bantam I received Friday just died - super super pale and pooped out nasty blood (see pics) so was thinking coccidia- when I went back to clean up the pen and Check the other 4, there was a worm- almost looked like a baby earth worm- and I can’t Id it. I don’t know what I should do for treatment and how contagious that it would be since I had them in a brooder cage next to another brooder cage. I am really freaking out here! Please help!!