Scientific name: Calidris alpina
Found along the coast all year-round, the dunlin is a small sandpiper that breeds and winters in the UK. It can be seen in its upland breeding grounds in summer, when it turns brick-red above and sports a black patch on its belly.
Average lifespan: 5 years
Classified in the UK as Red under the Birds of Conservation Concern 5: the Red List for Birds (2021).