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
Cold and clear with widespread frost on Sunday night. Sunny Monday, then showers
Tech giants Facebook and Google both have simple, powerful tools to help friends and family keep track of loved ones
A number of Britons are feared stranded on Mount Everest after the Nepal earthquake triggered a deadly avalanche on Saturday.