https://www.ideals.illinois.edu/items/9957
Criteria for Selection of Illinois Waterfowl Season Dates | IDEALS
criteria for selectionwaterfowl seasonillinoisdatesideals
https://dec.ny.gov/things-to-do/hunting/migratory-game-bird/waterfowl-season-setting-places-to-hunt
Waterfowl Season-Setting - NYSDEC
Most migratory game bird seasons are set based on five hunting zones that have been approved by the U.S. Fish Wildlife Service.
waterfowl seasonsettingnysdec
https://www.fws.gov/press-release/1965-06/dates-and-regulations-adopted-early-teal-hunting-season-two-waterfowl-flyways
Dates And Regulations Adopted For Early Teal Hunting Season In Two Waterfowl Flyways; Twenty States...