You could bring the other pigeons inside in cat carriers or boxes and leave the loft door open.
Bad Idea,, it allows Rocky to enter into loft and snack out

on the 3 vagrant pigeons that were not smart enough to enter before lockup.

Worse yet,,, since familiar where the source of food is readily available,,,, will attempt entry next day and try breaking in.
That's a great idea but there's too many of them
I'm glad you locked up the loft

Your pigeons will be fine in the trees. Of course there is no guarantee,,,, since owls, if you have in area, could possibly take one.
Pigeons would stay in tree for the night, and not attempt to fly in the dark into loft.
Look at this as a learning experience. Let your pigeons out preferably hungry. They will trap much easier. As time passes, and your flock fly's together,,,,, they will also trap into loft somewhat together. Meaning, they will go to sleep in loft with the onset of nighttime.
There is no problem with flying your pigeons late in afternoon. Some advantages as well. Most hawks already ate lunch earlier in the day, so not really looking for dinner pigeons.
WISHING YOU BEST,,,,,,,,,,,,,,,,,,,,,,,,,,,
