Chesley Sullenberger 29 to 31, 2007. On January 15, 2009, Sullenberger was the captain of US Airways Flight 1549, an Airbus A320 taking off from LaGuardia Airport in New York City. Shortly after takeoff, the plane struck a large flock of birds (Canada geese) and lost power in both engines. Quickly determining he would be unable to reach either LaGuardia or Teterboro airport, Sullenberger piloted the plane to a water landing on the Hudson River. All 155 people on board survived and were rescued by nearby boats. Sullenberger said later: "It was very quiet as we worked, my copilot Jeff Skiles and
Flock (birds) success rate when attacking the flock, rather than increasing the ability of the flock to spot an approaching predator. By birds co-existing with one another in a flock, less time and energy is spent searching for predators. This mutual protection of one another within the flock is one of the benefits to living within a group. However, as flock numbers increase the more aggressive individuals within the flock become towards one another. This is one of the costs to living within a flock. It is often seen that flocks are dynamic and thus fluctuate in size depending on the needs