Crow hunting is regulated federally but they allow the states to set seasons following the federal guidelines-
Federal hunting regulations for crows are defined in § 50CFR20.133:
§ 20.133 Hunting regulations for crows.
(a) Crows may be taken, possessed, transported, exported, or imported, only in accordance with such laws or regulations as may be prescribed by a State pursuant to this section.
(b) Except in the State of Hawaii, where no crows shall be taken, States may by statute or regulation prescribe a hunting season for crows. Such State statutes or regulations may set forth the method of taking, the bag and possession limits, the dates and duration of the hunting season, and such other regulations as may be deemed appropriate, subject to the following limitations for each State:
(1) Crows shall not be hunted from aircraft;
(2) The hunting season or seasons on crows shall not exceed a total of 124 days during a calendar year;
(3) Hunting shall not be permitted during the peak crow nesting period within a State; and
(4) Crows may only be taken by firearms, bow and arrow, and falconry.
Federal depredation order for crows as defined in § 50CFR21.43:
§ 21.43 Depredation order for blackbirds, cowbirds, grackles, crows and magpies.
A Federal permit shall not be required to control yellow-headed redwinged, rusty, and Brewer’s blackbirds, cowbirds, all grackles, crows, and magpies, when found committing or about to commit depredations upon ornamental or shade trees, agricultural crops, livestock, or wildlife, or when concentrated in such numbers and manner as to constitute a health hazard or other nuisance: Provided:
(a) That none of the birds killed pursuant to this section, nor their plumage, shall be sold or offered for sale, but may be possessed, transported, and otherwise disposed of or utilized.
(b) That any person exercising any of the privileges granted by this section shall permit at all reasonable times including during actual operations, any Federal or State game or deputy game agent, warden, protector, or other game law enforcement officer free and unrestricted access over the premises on which such operations have been or are being conducted; and shall furnish promptly to such officer whatever information he may require, concerning said operations.