People, it is one thing to build within a forest, it is another thing entirely to set up a claim in a forest, You see. Currently the terrain is static, at least in terms of Forest/Grassland/Swamp Settings. Specific creatures spawn in specific areas, and boars/bears/deer only spawn in forested areas, But they will never spawn on claimed land.
This means that not only is it annoying while hunting to find a whole city, but also inconsiderate and in ways, offensive, It hurts everyone not just you. It harms all who would hunt.
So please, if you must do so, Build a settlement at the edge of a forest.