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Bird Control Program Forward Landfill—Manteca, California _ been a gull resting on the airport runway. The fifth strike involved a business jet on its landing roll on 31 December 2011. The flight crew reported the strike at the time and must have seen the bird. Had it been a gull, it likely would have been reported as such or at least as a medium or large bird. A runway check was performed immediately after the incident but no carcass was found, again suggesting that a gull was not involved. There were two strikes reportedly involving "large" birds and two involving birds of "medium" size. There was no information on the species involved although it should be noted that gulls are fairly easy to identify as gulls, if they are seen. Of the two incidents involving "large" birds, the first occurred on 23 April 2000 when most gulls have left the Stockton area. This involved a Cessna Citation II jet that struck a bird at 2000 ft while on climbout from Runway 29. The aircraft was west of the airport at the time. It made a precautionary landing with a small amount of damage. Given the time of year and the altitude of the strike, it is _ unlikely that a gull was involved. The second strike of an unknown "large' bird occurred on 16 January 2010 and involved a single-engine Piper 46 Malibu aircraft that was at an elevation of 2500 ft, 8-10 miles west of SCK on climbout from Runway 29. Given the altitude, it is unlikely _ that a gull was involved and given the location, it is unlikely that a bird from the landfill, which is east of the airport, was involved. The two incidents involving unknown birds of "medium" size are discussed in this paragraph. The first involved an MD-80 twin-engine passenger jet that struck a bird at 400 ft while still over the airport on climbout from Runway 29R on 23 January 2008. The pilot advised _ of the strike and continued on his flight with no damage to the aircraft. The second incident involved a Learjet 45, a small twin-engine business jet. The aircraft was on approach to Runway 29R in rain and fog on 28 December 2009. It broke out of the clouds and struck a bird over the runway. There was no damage and the strike had no effect on the flight. In conclusion, of the 45 strike reports from Stockton Metropolitan Airport beginning in — 1990, only one definitely involved a gull (carcass only) and three others might have involved gulls. Even allowing for significant under-reporting of bird strikes, four strikes at SCK in over 24 years with no damage reported indicates that the uncontrolled Forward Landfill was not posing a significant threat to aircraft using the Stockton Metropolitan Airport. Twenty-three of the reported bird strikes at SCK occurred since the gull control program was instituted at Forward Landfill. These strikes involved Barn Owls (3), a Burrowing Owl, a White-tailed Kite, — Red-tailed Hawks (3), a Turkey Vulture, an American Kestrel, Horned Larks (3), Western Meadowlarks (2), a Rock Pigeon, an European Starling, unidentified small birds (4), and two unidentified birds. No gulls were involved and none of the birds struck were attracted to the area by the landfill. Conclusions The studies reported here were designed to assess whether the gull control program at the Forward Landfill continued to be effective in eliminating any hazard to aircraft caused by the attraction of birds to the landfill. The control program continued to be virtually completely effective at preventing gulls from feeding at, or otherwise using, the Forward Landfill. This was a huge reduction from the estimated 3,000 gulls that were present at the Forward Landfill in March — 13 30 December 2013