Wingbanding is fairly easy and I can do one bird myself in about 3 minutes, provided both wingbands are laid out, with one loaded into the pliers. Occassionaly for some unknown reason when the pliers is released it does not open up and needs pried apart and it's because the pointed part of the band does not go thru the slot in the other side. I check my birds twice every year when they are moved to insure both bands are still on, and if not I replace the lost one and record the new number. Only problem with adults is the feathers needs to be plucked where the band will be because of the thickness of the feathers. I don't really check my males, as they are what they are but hens that has the "split" factor in their genetics must be able to be identified more so than say plain IB hens.
I have "pieds" from 2 separate pens, Thang and Roadtrip and these birds looks very much alike, except the Roadtrip sired pieds are split to Black Shoulder, where Thangs is not. I hatched several Opal chicks this year that looks like plain Opals, but all these chicks father,Opie is a Opal Black Shoulder, which is another reason for keeping accurate records and wingbanding.