A WW24 CREW; DEPARTING GRB; ENCOUNTERED A FLOCK OF SEAGULLS ON TKOF ROLL; SPAWNING A REJECTED TKOF.

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WE WERE DEPARTING GREEN BAY; WI; WITH 4 PAX FOR A NON-STOP FLT TO SANTA MONICA; CA. WE WERE ASSIGNED RWY 18 FOR DEP. I BELIEVE WE WERE THE FIRST ACFT ASSIGNED THIS RWY; AS PRIOR TO THIS; I HAD NOTICED ACFT DEPARTING RWY 24. WITH FULL FUEL AND 4 PAX; OUR CALCULATED TKOF WT WAS 22800 LBS; WHICH IS CLOSE TO MAX GROSS TKOF WT OF 23500 LBS. OUR CALCULATED BALANCED FIELD LENGTH; FACTORING IN THE WET RWY; WAS 6000 FT. RWY AVAILABLE WAS 8200 FT. TKOF WAS INITIATED AND EVERYTHING PROCEEDED NORMALLY UNTIL THE FO CALLED 'V1;' AT WHICH TIME I SPOTTED A LARGE FLOCK (50-100) OF SEAGULLS IMMEDIATELY AHEAD ON THE RWY AND IN THE AIR ABOVE THE RWY. REALIZING THAT A TKOF WOULD HAVE PUT ME IN THE 'THICK' OF THE BIRDS; I DECIDED TO STAY ON THE GND AND ATTEMPT TO GO UNDER THEM. UNFORTUNATELY; THIS DID NOT WORK AND WE TOOK A DIRECT HIT TO THE R WINDSHIELD. WE ALSO HAD A THUMP FROM THE REAR OF THE ACFT. AT THIS POINT; SEEING THAT WE STILL HAD PLENTY OF RWY LEFT; I ELECTED TO ABORT; AS I FELT A TKOF WOULD HAVE CAUSED FURTHER STRIKES. WE INITIATED THE ABORT WHICH WAS SUCCESSFUL; ALTHOUGH WE USED ALL THE AVAILABLE RWY. AFTER RETURNING TO THE FBO; WE ASSESSED THAT 1 BIRD HAD HIT OUR WINDSHIELD AND THE REMAINDER OF THE CARCASS HAD HIT THE TAIL. THE ACFT SUFFERED NO DAMAGE APART FROM THE NEED TO REPLACE THE R BRAKE DUE TO OVERHEATING. AND THERE WERE NO INJURIES. IN THE FUTURE; I WOULD RECOMMEND ALL PLTS TO BE VERY AGGRESSIVE IN AN ABORT. IF I HAD DONE SO INITIALLY; IT WOULD NOT HAVE RESULTED IN USING UP SO MUCH RWY. ALSO; ARPT MGMNT SHOULD MAKE IT A POLICY OF HAVING A PATROL CAR INSPECT RWYS BEFORE ASSIGNING THEM FOR USE BY ACFT.