I had a 5 wk old mille fleur dUccle last year who seemed to have Marek's. One day he started limping, and soon he could not walk at all and had his legs sprawled out. His comb was small and dark and did not look healthy. Before my dad could put him down he disappeared. There was no sign of him and we never saw him again. None of his siblings showed the signs ever. Poor chicken. Anyway, did he have Marek's? Thank you!