Complex sentence: There are year-round populations of ducks, pelicans, grebes, blue herons, egrets, osprey, and bald eagles, and the basin supports sizable populations of deer, bear, mountain lion, raccoon and other animals.
Split into simpler sentences: There are year-round populations of ducks, pelicans, grebes, blue herons, egrets, osprey, and bald eagles. The Basin also supports abundant populations of deer, bear, mountain lion, raccoon and other animals.