Dunlin Welfare: Arctic Breeding Habitat and Climate Change

Dunlin are abundant shorebirds that breed in Arctic and subarctic tundra, with climate change causing significant welfare challenges by altering nesting habitat and invertebrate prey timing.

Key Facts

Dunlin are among the most numerous waders in the Arctic, with multiple subspecies breeding across the circumpolar zone
UK dunlin breed primarily on upland blanket bog, with the main population in Scotland
Winter populations in estuaries rely on intertidal invertebrates that are sensitive to climate warming
Climate change is causing permafrost thaw that alters the tundra breeding habitat structure
Phenological mismatch between hatching and invertebrate peaks is being documented in some populations

Welfare Considerations

Dunlin welfare is increasingly threatened by climate change effects on their breeding habitats. Permafrost thaw in Arctic breeding areas converts firm tundra to waterlogged and unstable surfaces, reducing the suitability of nesting habitat. Phenological mismatch between chick hatching and peak invertebrate availability, driven by warming-accelerated invertebrate emergence, causes chick food shortage. In UK upland populations, drainage of blanket bog and forestry planting have degraded breeding habitat, compounding climate effects. Wintering dunlin face welfare challenges from changing intertidal invertebrate communities as estuary temperatures warm, requiring dietary flexibility that may not always be possible.

What You Can Do

Support restoration of upland blanket bog habitats in the UK for breeding dunlin
Contribute dunlin ringing and survey data to national and international shorebird monitoring
Advocate for ambitious climate action to protect Arctic breeding habitat for migratory shorebirds
Support estuarine conservation that maintains intertidal invertebrate communities for wintering waders
Donate to international Arctic conservation initiatives protecting dunlin breeding habitat