The pilot was conducting a local flight in weather conditions which were fine, but with a gusty 20-25 kts south-easterly wind blowing. On return a normal approach for landing was made at 85 kts, with the touchdown at 80 kts. About 250 metres into the landing roll a wind gust, combined with the aircraft canard design and undulation in the airstrip surface, caused the aircraft nose to pitch up through 45 degrees, and become airborne again. Before the pilot could take recovery action the aircraft stalled and impacted the airstrip in a steep nose down attitude. It then bounced and skipped across the ground on its nose for about 28 metres before tipping over onto its back.