If you're ever lost in the action editor when animating a complex object, Denis Chera's 'Changed Bones' add-on can help: it allows you to show only modified bones, reducing the visual complexity a lot!
Changed Bones add-on is developed for animators who don't like mess of keys in action editor. It also speeds up the work on animations and provide visual information about all the bones that have been changed.
Changed bones are highlighted with pink color. After all tweaking has been done we can insert keys for all changed bones with one click. Only changed transforms will be keyed.