Between 1990 and 2000 the FAA reported some 33000 birdstrikes. It is estimated that birdstrikes occur about once every one thousand flights.
80-90% happen below 500 ft.
15-20% of birdstrikes cause damage to the aircraft. Most often to the engines, as 50% of engine birdstrikes cause damage.
80% hits the nose of the aircraft (radome, windshield) and engines (Fairly even spilt between the two). The rest hits the wings, fuselage, gear and tail, in that order.
Birdstrikes are most likely to occur in Europe(42%), followed by North America(32%), Asia(19%), Africa(4%) and South America/Caribbean(2%).