Birds I got of one strain were vaccinated, n they are line hit worse then by paratyphoid. Salmonella coccidia and ecoli are naturally occurring in body, only bad when something else sets them on rampage. Without song birds nesting here this year.. my pigeons didn't get any ailments at all, and...
I now only treat with probiotics, vitamin/mineral drops, and apple cider vinager in water. Meds just weakend my birds and they stayed sick longer and got sick again soon worse. Probiotics seem to naturally safeguard eggs n young too. Keep clean dry loft. free of other birds, rodents n...