Complex sentence: This once blue, saline lake was a very important feeding and resting stop for millions of waterfowl each year and is still considered to be a Nationally Significant Bird Area by the Audubon Society even though Owens is now a mostly dry lake.
Split into simpler sentences: This once blue, saline lake was a very important feeding and resting stop for millions of waterfowl each year. Owens Lake is still considered to be a Nationally Significant Bird Area by the Audubon Society even though Owens is now a mostly dry lake.