I "LIKED" your post because you said in a 'different language' than me. More politically correct and articulate.
In responce to the part of your post that I quoted above... I 've allowed fly-ins as well and found them to be really good homers.
To illustrate that, I was asked to rid a church in my community of "every d-- one of them pigeons" and repair the roof and eaves. I caught/trapped over 40 birds over a period of 5 days. Of course I kept the best looking(eye, tail, flights, head, back[and
colors/markings]) birds mostly BlueBars, Pieds and Whites. The others, dun, red, brown, check, grey, silver, etc, I crated and dropped them 2&1/2 hr travel time away in the middle of a city. After shopping for 2 hrs and visiting family&friends for an hour we made the 2&1/2 trio home to see a black hen and black cock sitting on the roof of the church. I went home, got my trap, opened 'their door' into attic, set my trap. When I returned an hour later I found it was a pair I had caught 3 days before and released in the city just hours before. Of course I kept them "prisoner" till their untimely death by mink but I'd already recieved about 30 or more offspring from them that all showed good homing instinct/desire and all were shiny black except for a Bull-eyed White. I called him bouncer because although he was never in front of the returning kit he was always the first through the pins(trap) by literally bouncing off the landing board. These birds I put into my BlackEagles for stronger homing. I've never knowingly/purposefully bred back into the same lines except in the case of Mister and Ikkie of Bandit lines but for only one generation after the 3rd. Think I'll not be doing that again
