2009 Hudson River mid-air collision tours of the New York skyline. Visual flight rules on the river corridors by Manhattan have been subject to considerable debate since the 2006 New York City plane crash, in which New York Yankees pitcher Cory Lidle crashed into an apartment building while flying using visual flight rules on the East River. This was the first aircraft collision over the Hudson River since 1976. The collision, which occurred opposite 14th Street in Manhattan, was about 40 blocks south of where US Airways Flight 1549 ditched in the Hudson River on January 15, 2009, with no loss of life, after the
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