Keep calm and carrion. In Nepal, vultures have long been reviled as ugly, unlucky creatures. But four of nine local species are critically endangered after now-banned bovine medication poisoned cow carcasses. Locals stepped in to save them, caring for chicks and opening vulture “restaurants,” where visitors pay to see them fed. That’s boosted tourism and revived the population to 111 sightings this year from 76 last year. But authorities say the hard work must continue to give the birds — whose scavenging is necessary for sanitation — a fighting chance of survival.