WBFI members are classified based on two criteria:

Geographic coverage of their business:
National - Doing business in most regions
Multi-regional - Doing business beyond nearby states or provinces
Regional - Doing business beyond the local area and/or into nearby states or provinces
Local - Doing business only within on estate or province and within 150 miles of the principal place of business

Type of backyard wild bird feeding industry activities the business is involved in:

Packer: One who, using material from processors and others, packages, with or without mixing, materials such as wild bird seed in containers for ultimates sale to consumers.

Processor: Country elevator or others who perform cleaning and other conditioning of seed and provide it to Packers and do not engage in the business of a Packer.

Distributor: One whose activity in the wild bird products industry consists of negotiating or acting as agent for Packers, Processors, Distributors, Feeder/Accessories, and Retailers, but does not meet any of those definitions. Brokers are considered to be Distributors.

Feeder/Accessories: One who produces or introduces for sale any product related to wild birds, backyard wildlife feeding or backyard habitat enhancement, other than wild bird feed, for ultimate sale to consumers.

Retailer: One who sells products of Packers or Feeder/Accessories to consumers.

Associate: One who provides products or services to persons engaged in the business. Non-voting status. Examples of Associate members include transportation companies and packaging manufacturers.