You want more birds? Increase the habitat that they require to breed and have their young survive and thrive and produce young that do the same.

Try to get the farmers to not farm all the way up to the edge of everything and leave some room for the game to have travel lanes and places to hide from predators.

More habitat is the key to increasing game populations.

How many farm fields are not paved over with concrete? Plenty in my area. While there is still hundreds of acres of land a lot of what we use to have is paved over now.

Also I believe it might help to limit the number of predators that feed on quail and rabbits and other smaller animals that we like to hunt for food and fun.

Have you noticed how many hawks are around these days? And the number of Bobcats, coyotes are increasing every day. All these are wild predators that have to eat to survive. They eat the same rabbits and quail that we like to hunt. They also prey on waterfowl.