This is a black headed gulls nest. Slightly more substantial, the nest is made out of reeds they usually have about 3 eggs. There are 17 black headed gull nests on the gravel island. We will hopefully go out and colour ring the chicks in the next couple of weeks. Using colour rings will allow us to easily identify them from a distance and we are more likely to get reports of where they have been so we can produce an awesome migration map. Black headed gulls spend a lot of time moving around Europe. It'll be interesting to see where the fleet pond gulls go!