I would go to TSC tomorrow, but a bottle of Tylan 200 and put in 4cc per gallon of water. 1 cc for a quart waterer for 5 days.yep....splash marans....about 2.5 weeks old I think. We picked it (and a cuckoo and a black copper) up last Saturday and this one has been sneezing or whatever since yesterday. The other 2 are in the brooder with it and I haven't noticed anything with them yet, but I'm still uneasy......Dr. Google doesn't help things either.