The red-necked phalarope is one of Britain rarest breeding waders, confined to a handful of machair and peatland sites in the Northern Isles, where its welfare depends on pristine wetland conditions.
Red-necked phalaropes require pristine, nutrient-poor wetland pools surrounded by short, wet vegetation for nesting. Agricultural drainage and peat cutting have eliminated most former breeding sites. The species is so rare in the UK that a single severe breeding season can cause significant population-level welfare impact. Ocean conditions in the Pacific wintering quarters are little understood but may be deteriorating under climate change.