More efficient farming machines/practices, Earlier maturing rice and beans, the 0 grade field. On and on in the ag world. Results in less grain left in the fields, what's left re sprouts typically, and fields are worked for next year right after harvest.

Relentless pressure

Weather not cooperating

Rest areas / flooded corn / banking ducks / white oak style operations

Spinning wing decoys slaughtering yearling ducks up north

More traveling hunters

Better hunter technology (guns/ammo/clothing/etc)

Boats / mud boats and machines that go anywhere

Skybusting and general bad practices conditioning ducks

It's a lot of different things hurting Arkansas