old saying if in doubt leave it out. if your yb,s are ranging going a mile or 2 is no good take them at least 5 and for the time being put all up together. pigeons are a flock animal and a yb on its own will join other birds given a chance.as for Saturdays training i would definitely not do it . on Saturdays the best you can do is keep birds in till a bit latter in the afternoon. my 1st point of training is 10 mile from loft.also try and let birds go in an open area.