Don't worry I got yer point !! Obviously they both deliver immunity !! A further issue with oil based vaccines that I was informed of by a vet is there a more risk of a "knot" being left in the pigeon neck if administration is done incorrectly
Usually always available at Blackpool show !! I wil be vaccinating my birds in the next couple o days with Nobilis not my preferred choice but don't want to wait as like to get them done about 6 weeks before breeding !! Just have to more careful !!