Thousands of birds were discovered dead at the Salton Sea last month, raising new concerns about the lake's declining health. KVCR's Benjamin Purper has more in this feature report. I’m at the Sonny Bono National Wildlife Refuge at the southern end of the Salton Sea. There are hundreds, maybe thousands of birds here today, using the Salton Sea’s wetlands as one stop along the Pacific flyway for migratory birds. But just last month, this same refuge was the site of a gruesome bird die-off, where