THE ACFT WAS ON FINAL FOR A WATER LANDING WHEN A BIRD HIT THE WINDSCREEN ACCORDING TO THE PLTS STATEMENT. A WITNESS WHO OBSERVED A DARK OBJECT (THOUGHT TO BE A CORMORANT, SINCE SEVERAL WERE SEEN IN THE AREA BEFORE & AFTER THE ACCIDENT) SAIDTHE OBJECT FLOATED AWAY FROM THE ACFT WRECKAGE AFTER THE ACCIDENT. THERE WAS A LARGE HOLE IN THE WINDSCREEN AND CUTS OF THE PLTS FACE FROM FLYING GLASS AND THE EFFECT OF HIS GLASSES BEING FORCIBLY IMPACTED INTO HIS EYEBROWS. THE PLT HAS A VAGUE RECOLLECTION OF AN IMPACT AT APRX 50 FT AGL. WHEN HE REVIVED HE WAS IN THE WATER, HE SAID, AND AFTER RELEASING HIMSELF, HE MANAGED TO ESCAPE THROUGH THE DOOR FROM THE SUBMERGED, INVERTED ACFT. A MAN ON SHORE HAD HEARD THE ACFT CRASH AND CAME TO THE PLTS AID, GIVING HIM A RIDE TO SHORE IN A BOAT. THE PLT HAD MAINTAINED A HIGHER APCH TO MISS OBJECTS SEEN IN THE WATER.