For this reason he regards them as Gregarines rather than coccidia.
That coccidia are not always killed by exposure to the sun is shown by their survival on the sites of old chicken yards.
Coccidia Coc·cid·i·a (kŏk-sĭd'ē-ə)
An order of protozoans that are intracellular parasites in many vertebrates.
coccidium coc·cid·i·um (kŏk-sĭd'ē-əm)
n. pl. coc·cid·i·a (-ē-ə)
Any of various protozoan parasites belonging to the order Coccidia.