Research into problems of bird hazards and aircraft is said to have begun following a 1960 crash of a turboprop aircraft in Boston, killing 62 people. The problem of bird-aircraft strike is discussed, and data on bird strikes are presented for the U.S. for the years 1962-1963 according to aircraft type, altitude, species of birds involved, and costs of damage. Bird control methods in use at airports, as reported in a 1966 survey, are compiled and discussed.