Enw gwyddonol: Chroicocephalus ridibundus
The black-headed gull is actually a chocolate-brown headed gull! And for much of the year, it's head even turns white. Look out for it in large, noisy flocks on a variety of habitats.
Average lifespan: 11 years
Classified in the UK as Amber under the Birds of Conservation Concern 4: the Red List for Birds (2015).