A chunky sandpiper that turns brick red in summer and pale grey in winter. This is a bird of extremes. It breeds in the high Arctic where the sun never sets. It winters in the southern hemisphere where the seasons are reversed. The journey between them covers 15000 kilometres. It flies this route twice a year. The distance is vast. The effort is routine. Breeding plumage is unmistakeable. Rich chestnut red covers the head breast and belly. The back is mottled grey and rufous. The bird looks dipped in rust. Outside the breeding season the appearance changes completely. It becomes pale grey above and white below. The breast is streaked. Two birds in one body. The transformation is total. Feeding involves molluscs worms and crustaceans. The bill is short and straight sensitive at the tip. It probes deep into soft mud. The process is methodical. It probes. It swallows. It moves on. Small molluscs are swallowed whole. The technique relies on touch. The eyes are not needed for this work. The call is a soft nasal 'knut'. It is often given in flight. The sound resembles a small bell. It carries over the water. The noise is gentle. It does not alarm the flock. In New Zealand these birds are regular summer visitors. They arrive in October and leave in March. Thousands overwinter on northern harbours. Kaipara Manukau and the Firth of Thames host large numbers. They scatter around the coast. The locations are predictable. The timing is precise. Several subspecies exist breeding in different parts of the Arctic. The birds reaching New Zealand come from Siberia. They fly the East Asian-Australasian Flyway. The route is ancient. It is also fragile. The population is declining. Yellow Sea mudflats serve as a critical stopover for refuelling during migration. These areas have been reclaimed. The birds arrive. The mud is gone. The food source has vanished. The consequence is starvation. The trend is downward. Early New Zealand naturalists once called this the 'robin sandpiper'. The name did not stick. It was descriptive but inaccurate. The current name is better. It reflects the call. Huahou is a bird of the tides. It feeds when the water is low. It rests when the water is high. It follows the rhythm of the sea. The cycle dictates its day. There is no deviation. This is a long-distance traveller. It does not seem to find the journey remarkable. It just does it. The instinct drives the motion. The miles accumulate. The survival depends on completion.