Federal Framework
The parameters established each year by the U.S. Fish and Wildlife Service for waterfowl seasons; includes number of days, earliest opening date and latest closing date
Flank
The side of the bird’s body; the area just above the waterline when the bird is on the water.
Flyway
A concept developed by biologists to describe the major paths taken by migrating birds; North America has 4 flyways: the Atlantic, Mississippi, Central and Pacific
Forehead
The front of the bird’s head, between the bill and crown.