im very careful when introducing a new pigeon into my loft, ive only introduced 4 over the last 5 - 6 years, and i dont plan on letting any more in.......
as ray says about letting late comers back in......a few years ago i had a mealy return, after being missing from a race, and after that my birds came down with illness, this was years ago but i`ll bear in in mind if i ever race in future .