A decade ago, Guy McCaskie would stand on the shore of the Salton Sea and marvel at the vast masses of birds that congregated on the water and flew overhead. Nowadays he looks out over the lake and is saddened by how few birds he sees. Most of the American white pelicans have disappeared. So have most of the double-crested cormorants and eared grebes. McCaskie said these types of birds are vanishing because they can no longer find enough fish or other food in the lake.