NEW DELHI: A Ranchi-bound IndiGo flight made an emergency landing on Monday after a bird hit the plane.The flight had 175 passengers on board. It landed safely, and all passengers were unharmed, officials were quoted as saying to news agency PTI.The IndiGo aircraft was flying at around 4,000 feet when it suffered damage after being struck by a vulture, officials said. The plane made an emergency landing at Ranchi airport.