The population of the protected seabirds has risen by 400 in the last for years, a charity says.Read more
BBC Look North
North East and Cumbria
The RSPB is asking people to keep an eye out for trapped seabirds on the Newcastle and Gateshead quaysides.
Hundreds of kittiwakes have returned to the River Tyne for the nesting season.
Many businesses and landlords have been working to make their properties safe for the birds, but the RSPCA and RSPB say there are still some dangers.
Last year, gulls were said to be dying "horrible, long, miserable deaths" in netting installed on buildings to stop birds nesting.
Plans are being put in place to allow for the return of the River Tyne's famous colony of kittiwakes, after some died earlier this year from getting caught in netting on buildings.
The animals were getting stuck in the mesh that was put up to stop other birds nesting on the buildings (pictured).
Newcastle City Council now says it will invest in an electrical deterrent, that won't affect the kittiwakes
Netting used to stop nesting on buildings is harming Newcastle's kittiwake colony
On Mumbles Pier in Swansea, kittiwakes have taken advantage of man made structures to build their nests on. Here you can get really close to the gulls, who use the pier ledges as artificial sea cliffs. The pier offers them shelter for nesting, an easy food source and protection from predators.