Vermex is Piperazine (Wazine), which kills
only roundworms, not any other types. Unless you mean
Verm-X, which is herbal. Could be they do have another type of worm, but you should never worm them every single month. Maybe a broad spectrum wormer would be a better choice, but
much less often, maybe once a year.
There are other causes for messy bottoms than worms, though.
Quote: Vaccinated for what, though? There are many different possible vaccinations, for coccidiosis, for Mareks Disease, for Newcastle Disease, etc, etc. Mine are not vaccinated against anything and I don't plan to start, but they are healthy. I don't purchase started birds at all, not even chicks. Even so, I would never take in a bird without at least a month long quarantine to check for any symptoms that might come to the surface-this is to protect the flock I already have. If the bird showed respiratory illness during that time, the protocol would be to euthanize rather than treat or add to your flock. Saves tons of heartache; you'll see that if you read Emergencies for a day or two.