California Code, Fish and Game Code - FGC § 3039

(a) Except as otherwise provided in this section, Section 2023, Section 3087, Section 4303, another provision of this code, or a regulation adopted pursuant to this code, it is unlawful to sell or purchase a bird or mammal found in the wild in California.

(b) Shed antlers, or antlers taken from domestically reared animals that have been manufactured into products or handicraft items, or that have been cut into blocks or units that are to be handcrafted or manufactured into those articles, may be purchased or sold at any time. However, complete antlers, whole heads with antlers, antlers that are mounted for display, or antlers in velvet may not be sold or purchased at any time, except as authorized by Section 3087.

(c) Notwithstanding Section 3504, inedible parts of domestically raised game birds may be sold or purchased at any time.

(d) A person who illegally takes a bird or mammal for profit or for personal gain by engaging in an activity authorized by this section is subject to civil liability pursuant to Section 2582.

(e) This section shall become operative on January 1, 2023.