Local conservancy argues that sale violates prohibition on dividing land, makes it less viable for agriculture and harder to manage the easement.
The measures they studied include scent marks, playing recordings of the howling of other wolf packs and human activity.
They say that rail is good for the environment and the economy and also for attracting and keeping young workers in the state.
Study says food, water, elevation, vegetation, remoteness are suitable. Recolonization could bring political and cultural problems similar to those involving wolves.