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Bird code systems: The Bird Banding Lab system

The Bird Banding Lab of the U. S. Fish and Wildlife Service maintains a system of four-letter codes for bird types. Variants of this system have been in informal use since probably the early 1960s. The BBL formalized the system in the late 1960s and has revised it occasionally since.

You can reach the Bird Banding Lab via e-mail at

Next: Bird code systems: The Breeding Bird Survey system
See also: Overview of systems for encoding bird names
Previous: Bird code systems: AOU Numbers
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John W. Shipman,
Last updated: 2000/06/01 23:51:04