Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 318; Flight Crew Type 5600
Aircraft Equipment Problem Less Severe; Inflight Event / Encounter Bird / Animal
Aircraft Aircraft Damaged; General Maintenance Action
Environment - Non Weather Related
I was PM (Pilot Monitoring). Captain was PF (Pilot Flying). We have flown many times together. We departed on the OAK 2 Departure. We were delayed at the gate but I don't believe that manifested itself as a causal factor in the bird strike. We leveled off at 2000 ft as we checked in with NorCal Departure. NorCal told us that one mile in front of us there might be traffic. The Controller was getting a non-reporting return. We did not acquire any traffic. Controller reported us clear and instructed us to climb unrestricted to FL190. We put 19;000 ft in the altitude and initiated a climb. Just as the climb started; we passed through a flock of birds that were not discernible until they were right in front of us. They were brown in color and; for the moment I saw them; appeared smaller than Water Fowl; maybe Finch to Crow size. We knew we had at least one strike; audible. We suspected more.Aircraft performed normally on controls. Engine indications remained entirely normal. No abnormal odor. Captain remained PF. I relayed to ATC the bird strike. I then referred to the QRH (no guidance); AOM (Aircraft Operating Manual) Non Normal bird strikes; and [other manuals] guidance. We contacted Dispatch with notification of the strike. About this time; Non-rev Pilot in back communicated that there was a large dent in the number 2 nacelle leading edge. Captain kept control. Using security protocol; I went to Passenger compartment and observed damage. Baseball-Softball sized dent leading edge number 2 nacelle. The dent contour suggested that the bird remains went over nacelle not thru the engine. We took photos. We reviewed photos on flight deck and; given good engine ops and no other observed damage we elected to continue.Safe; uneventful flight; approach; and landing. Upon post flight inspection; we observed a softball size hole in the leading edge of the FO (First Officer) side horizontal stabilizer. This was a location of another strike. We could not observe this location in flight and; since the aircraft was operating entirely normally; we had no reason to suspect significant further damage on aircraft.
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Air Carrier flight crew reported a bird strike during departure.