Olmsted County Commissioners table decision affecting development project on land where herons nest A proposed housing development plan on land in Rochester Township is a subject of recent controversy. As part of the plan, some trees would be cut down and a private road would be constructed through the nesting grounds of a group of great blue herons. Posted: Apr 6, 2021 7:00 PM Posted By: Annalise Johnson OLMSTED COUNTY, Minn. - A proposed housing development plan on land in Rochester Township is a subject of recent controversy. As part of the plan, some trees would be cut down and a private road would be constructed through the nesting grounds of a group of great blue herons.