Samples taken from two crows found dead recently at a DDA park in Dwarka here have tested positive for avian influenza following which it has been closed for public, officials said. The park is located in Dwarka Sector 9. Sanjay Lake and Hastsal Park are already closed since Saturday. "Samples taken from two crows found dead recently at Park no 3 in Dwarka Sector 9 have tested positive for bird flu infection. The park has been closed," a senior DDA official said. Eight samples taken from birds found dead in various parks in the last few days were sent to a Bhopal-based laboratory, which has confirmed bird flu in Delhi, government officials said earlier in the day.