There's always training.

Tonight we had traditional Jess training. Cindy showed us how to make them and also how to customize them to each bird. The traditional Jess is a single piece of leather that makes up the jess and the anklet (see 1st image at left). This is the type that is used on birds that aren't flighted. They are for tethering or handling only, and not for flying or hunting.

For an excellent description of all types of Jesses, check out
The Modern Apprentice.