Foreign object damage of the aircraft and saving the lives of the 18 crew. The remains of 77 birds were found on or near the runway. On January 15, 2009, US Airways Flight 1549 flew into a flock of Canada geese and suffered a double engine failure. The pilot ditched the aircraft in the Hudson River, saving the lives of all on board. People working near aircraft have been sucked into jet engines. Some have died from their injuries. Significant problems occur with airports where the grounds were or have become nesting areas for birds. While fences can prevent a moose or deer
Flock (birds) it is specifically the two different behaviours of the species that compose a mixed flock. Within a mixed flock there can be two different behavioural characteristics: sally and gleaner. Sallies are individuals that act as guards of the flock and consume prey in the air during flight. On the other hand, gleaners are those that consume prey living within vegetation. Studies have shown that as resources in the aerial environment increase, the flock will possess more sallies than gleaners. This has been shown to occur during forest fires in which insects have been flushed from vegetation, however this can also