These reclaimed areas also attract species of migrating birds. They prey on waterfowl, passerines, and migrating birds. The duckling sees a flock of migrating wild swans. Both are important stops for migrating birds. Survival rates may be lower for migrating populations of golden eagles. Gravettian settlers tended towards the valleys that pooled migrating prey. Greater noctule bats feed on nocturnal migrating passerines. Local governments are considering legislation to provide habitat for migrating monarchs. Migrating herds, especially males, have been reported. This area is along the Atlantic Flyway of migrating species. The material shows the assimilation between the local population and the migrating newcomers. They hunted buffalo by herding migrating buffalo off cliffs. Plant species are migrating to cover burn areas. Size of the local population migrating to Hawaiian Archipelago is unknown. The outer surface is divided into several gradually migrating tectonic plates.