Agriculture and conversion of pristine lands into urban or industrial areas have exerted immense pressure on natural biota due to habitat destruction and fragmentation in industrialized countries around the world. But since the 1900s, farmlands have been increasingly abandoned due to the decline in domestic agriculture and, in some countries, a decline in population. This yields an opportunity for abandoned farmlands to be used as rehabilitation zones for grassland, wetland, and forest animals. However, it has so far remained unclear how valuable for sustaining specific animal communities farmlands, abandoned farmlands, and natural habitats are relative to each other.