Yea, coccidia are very small & hard to ID. I didnt' mention the Fecasol because I preferred to use a sugar solution most of the time at school, brings up the heavier ova. And cheaper than fecasol, lol. But yes, that way works too, although like I mentioned never did a bird fecal before.
Sorry, that's the quick answer. Google hay and straw farms in Lansing Local farms usually advertise, and sell, straw, hay, and field grasses at a more reasonable price, however, best to check their stock and make sure it's been stored correctly. I've seen some pretty bad product rotated in front of last years. TSC and FFH usually have some nice stuff.
There is a Tractor supply, I was thinking of checking there but I thought it might be overpriced. I looked on Craigslist last night, found some farms but they were a bit of a drive to go pick it up. But my BF just bought a new diesel truck last night and he's itching to put it to work so maybe he wont mind a drive...lol