Experts say there are now 11,061 breeding pairs of Gannets in the breeding colony at Bempton Cliffs. This means a 40% increase since the last survey in 2009.
When the research first began in 1969, there were only 22 breeding pairs at the site.
The researchers also counted 798 non-breeding birds, which, when they are old enough to find mates, will add to the numbers.
More top news
Longest cold spell of winter so far. Bitterly cold with further wintry showers, significant snowfall likely over hills
Demonstrators will gather in Lincoln this morning to protest against proposed cuts to the city's local fire service.
Jon Mitchell with tonight's weather