CA Fish & Game Code Section 3700.1

(a)

It is unlawful for any person, except a person licensed pursuant to paragraph (2) of subdivision (a) of Section 3031, to take any migratory game bird, except jacksnipe, coots, gallinules, western mourning doves, white-winged doves, and band-tailed pigeons, without first procuring a state duck hunting validation as provided in subdivision (b), and having that validation in his or her possession while taking those birds.

(b)

State duck hunting validations shall be sold for a fee of ten dollars ($10) by the department and by license agents, who are authorized by the department pursuant to Section 1055.1, in the same manner as hunting licenses.

(c)

This section applies only to licenses, permits, reservations, tags, and other entitlements issued through the Automated License Data System.