Taxonomy separated it from its Atlantic cousin. The Indian yellow-nosed mollymawk is the smallest of its kind. It is one of the rarest visitors to New Zealand. It breeds on islands in the southern Indian Ocean. Amsterdam, St Paul, and the Crozets host colonies. It rarely strays into the Pacific. When it does, birders take notice. The plumage is typical for a mollymawk. A dark grey back, white underparts, and a dark tail define the look. The head is pale grey. The bill is black with a yellow ridge along the upper mandible. This yellow ridge is thinner than that of the Atlantic yellow-nosed mollymawk. That is the main difference. Identification requires attention to detail. Feeding involves fish, squid, and crustaceans. The bird follows fishing vessels for discards and offal. Like all albatrosses, it is vulnerable to longline bycatch. The hooks kill thousands each year. This threat drives the population decline. Flight is typical mollymawk style. Flaps and glides combine for efficiency. It covers enormous distances with minimal effort. A bird that lives on the wind. It uses the air currents to its advantage. Energy conservation is key to survival in the open ocean. Breeding takes place on remote Indian Ocean islands. The nest is a pedestal of mud and vegetation, built on a cliff ledge. A single egg is laid. Both parents share incubation duties. The chick takes four months to fledge. This is a long commitment. The parents must sustain themselves and their young in a harsh environment. In New Zealand, this species is a rare vagrant. Most records come from the Tasman Sea and the west coast of the South Island. These are birds that have crossed the Indian Ocean. They rounded Australia and entered New Zealand waters. It is a long journey for a small albatross. The population is declining. Bycatch is the main threat. Longline fisheries in the southern Indian Ocean catch hundreds of these birds each year. They cannot breed fast enough to keep up with the loss. Climate change adds another layer of pressure. Warming seas shift prey distribution. The birds have to fly further to find food. They return to their colonies in poorer condition. Breeding success drops. The cycle weakens. The Indian yellow-nosed mollymawk was once considered the same species as the Atlantic yellow-nosed mollymawk. Now they are separate. The Indian bird is smaller. It has a thinner yellow ridge. The birds do not notice the distinction. Taxonomy is a human concern. Survival is theirs. In New Zealand, it is a prize for birders. A rare visitor. A bird that should not be here but sometimes is. The call is a low, moaning croak, heard only at the breeding colonies. In New Zealand waters, it is silent. The global population is estimated at 50,000 to 75,000 breeding pairs. The International Union for Conservation of Nature classifies the species as Endangered. The numbers are falling. The bird carries on.