Large Transport
Flight Crew Air Transport Pilot (ATP)
Inflight Event / Encounter Bird / Animal
Aircraft Aircraft Damaged
Environment - Non Weather Related
During takeoff at V1 to Vr; three medium sized birds we're noticed flying above the runway at about the level of the aircraft. One of the birds crossed in front of the aircraft from right to left then disappeared down the left side of the fuselage. No indications of a bird strike were noticed by the flight crew and all engine indications were normal. After giving the flight attendants the 10;000 foot chime; the flight attendants called the flight deck saying one of the onboard mechanics wanted to talk to the flight crew. The mechanic was allowed to enter the flight deck. Upon arrival in the flight deck the mechanic advised he heard a noticeable pitch change in the Number one engine at rotation. All engine indications were normal; and the flight proceeded to destination.Upon post flight at the destination the left engine was examined and evidence of a bird strike was found. Fan blade number 17 was damaged beyond repair. Fan blades 16 and 18 were damaged; but within serviceable limits. No other evidence of bird strikes were noted on the fuselage.
Air carrier Captain reported they encountered birds just after takeoff. One bird is believed to have struck the engine resulting in some blade damage.