We saw these pelicans today in La Jolla, while having lunch at George's At The Cove.
I read about this phenomenon in the newspaper; pelicans are migrating up from Mexico, but no one knows for sure why. The best guess is they've found a plentiful food source, but it's kind of strange. Locals say they've never seen anything like it.
As the pelicans swarmed around, I thought of the 1963 thriller, The Birds, by Alfred Hitchcock, but these pelicans aren't harming anybody, if you ignore the impressive amount of waste they leave behind.