There’s something unusual in “Tropigal Paradise,” the newest episode of Angry Birds Seasons that was released on April 30. As always, there are irate birds, and they’re bouncing through 26 new levels of palms trees and beaches to save their eggs from the dastardly green pigs. But there’s also a banner that implores players to “Help The Birds!” Not the addictive digitized birds, but the real-life counterpart of each character. The Tahiti Monarch, Polynesian Ground-dove, Bristle-thighed Curlew, and Atoll Fruit-dove all live on Pacific Islands, and all have experienced drastic declines at the teeth and claws of invasive rodents brought to the isles by humans around 2000 BC. Along with cats and goats, these unwelcome real-life green-pig-equivalents drove half of all bird species to extinction in the Pacific Islands. Of the surviving species remaining in the Pacific area today, 81 are still threatened with extinction. BirdLife International has been racing to save...