An increasing number of dead birds have been found along the Swedish coastline. But according to Friday's Dagen's Nyheter, researchers have only found out why they don't die, as opposed to why they do die. By a process of elimination ornithologists have established that it isn't the algae in the water, or pollution, or infection. Most of the dead birds that have been discovered are old (old age?), and those who have survived have recovered from their illness when they've been given food (damn). "It certainly seems they are affected by some sort of external substance,"said Torsten Mörner from the National Veterinary Association. "But we can't explain what it might be."