It takes five or six years for the Northern Gannet to reach breeding maturity. When they do, they choose a mate for life. The gannet can live for around 17 years, but the oldest recorded gannet has been 37 years old. Throughout this time, the bond between a pair of Northern Gannets is strong. They return to the same nest year after year to renew their ties and to breed.
The male gathers materials for the nest, often from materials left over from the previous year. They take their time wooing and re-building their nest. This is no Vegas marriage, it is enduring.