Once seagulls have found a safe nesting area with nearby food and water sources, they will return there the next year again for breeding season. A single gull can live eight to 15 years, depending on the species. And the new generation of seagulls hatched at the breeding site will also return to it to breed and hatch their own chicks. Then that next generation of chicks will also grow up and come back to breed and nest there as well. And so the cycle continues. This kind of behaviour is called habitual imprinting. So, if the roof of your commercial property has been discovered by some gulls, the chances are good that their offspring will come back the next year, turning into an eternal cycle of seagull nesting…unless that cycle is properly interrupted by a knowledgeable bird control service.