As far back as i can remember Lanarkshire have used the same style of trailer to transport the birds, i went round in the wagon on Friday nights with my Da picking the doos up from the clubs. There were THOUSANDS more doos racing then than they are now, the difference now being returns from races are far worse than in the 70's. My point here is in those days every loft in the place had an abundance of old birds because it was harder to lose them, this however has nothing to do with transportation, its to do with what affects the doos AFTER they are released and NOTHING to do with how we transport them. jmo