Narrative:

Flew thru a large flock (30+/-) of ducks/geese, dark color (wide body, short wing type). Hit one on first officer windshield. Suspected other hits but none found on post-flight. Unusual to run over ducks at 12,500'. Our indicated airspeed was about 250 KIAS.

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Original NASA ASRS Text

Title: ACR MLG BIRD STRIKE AT 12,500' ON STAR INTO SFO.

Narrative: FLEW THRU A LARGE FLOCK (30+/-) OF DUCKS/GEESE, DARK COLOR (WIDE BODY, SHORT WING TYPE). HIT ONE ON F/O WINDSHIELD. SUSPECTED OTHER HITS BUT NONE FOUND ON POST-FLT. UNUSUAL TO RUN OVER DUCKS AT 12,500'. OUR INDICATED AIRSPEED WAS ABOUT 250 KIAS.

Data retrieved from NASA's ASRS site as of August 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.