Banders should plan ahead for the next season's field work. Requesting changes to an existing permit, such as adding or removing authorizations must be made in advance of banding activities. Please fill out the Additional Authorization Request Checklist and provide all the necessary information required for each type of authorization. Allow at least 8 weeks for the BBL to process your request. Additional time may be required regarding the coordination of auxiliary markers when multiple banders marking the same species. Coordination is the responsibility of the banders.