Cuckoo Maran- Three deaths in three weeks

[tdlyoung]

I have Bantams, Araucanas and Cuckoo Marans. The cuckoo marans are five months old and I have lost 5 out of 8. Two died within two weeks after I received them and I figured it was just survival of the fittest. Within the last three weeks I have lost three. Their symtoms were stroke like actions and then stayed by themselves and then death within 3-5 days. I separated them from the others as soon as their symptoms began.

I have contacted the State Bird Hot line and they haven't done anything yet. Hopefully they will pick up my latest demise tomorrow. Does anyone know if there is anything specific to the breed?