I suppose being netted is rather stressful, and I would hate to see any of your birds hurt. On the other hand, if they keep coming back year after year even after being netted and banded than maybe they aren't too upset about being captured and handled. After all, they have wings, if they were truly upset they would fly away when released and not come back. I know birds are the origin for the saying "bird brains", and can seem silly but they are smart when it comes to figuring out what hurts or helps and avoiding it or finding it.
Dr. Seuss~DLH (brother's cat)~June 2007-
Misty~DSH (my cat & Mooby's mom)-?-
MooBoots(Mooby) ~ DMH(Mom's cat)~July 21, 2008-
Sunshine~ Golden retriever X white german sheperd (Dad's dog)~October 24, 2008-