The bird you are thinking of when you say 'seagull' on any New Zealand beach. The southern black-backed gull is the default gull of the country. You see it at every harbour every landfill and every fish and chip shop with outdoor seating. It is large bold and unafraid of humans. It is white with a black back. The bill is yellow with a red spot at the tip. It eats your chips. It steals your lunch. The audacity is notable. The success rate is high. It is not actually called a seagull. The correct name is black-backed gull or karoro in Māori. The back is black. The rest is white. There is no confusion. The identification is simple. The appearance is distinct. The name is accurate. The common misnomer persists. The correction is often ignored. The bird does not care. It answers to neither. It responds to opportunity. Feeding involves fish shellfish insects carrion eggs chicks and human scraps. It is not fussy. A karoro at a landfill is in paradise. It is surrounded by discarded food. It fights with other gulls over the best bits. The competition is fierce. The scavenging is efficient. The diet is opportunistic. The flexibility is key. Survival depends on variety. The bird takes what is available. It does not wait for preference. The call is a loud harsh 'kyaa-kyaa-kyaa'. It is often given in flight. A flock of black-backed gulls circling over a fishing boat calls constantly. The sound carries for kilometres. The noise is pervasive. It marks the presence. It signals activity. The auditory landscape is defined by this voice. It is unmistakable. It is persistent. It demands attention. Breeding takes place in colonies on beaches sandspits and offshore islands. The nest is a scrape in the sand or gravel. It is lined with shells and dry grass. Two or three eggs are laid. Both parents share incubation duties. The chicks are covered in grey down. The development is steady. The protection is shared. The survival rate is variable. Predation is a risk. The location offers some safety. This species is also found in South America Africa Australia and Antarctica. It is widespread across the Southern Hemisphere. The distribution is vast. The adaptability is global. The bird thrives in diverse climates. It occupies many niches. The range is extensive. The presence is ubiquitous. In New Zealand the karoro is a bird of the coast and the city. It lives on harbours beaches and estuaries. It lives on farms. It lives in carparks. The habitat is modified. The bird accepts it. It exploits it. The urban environment suits it. The rural landscape supports it. The coastline is its origin. The city is its expansion. Karoro was known to Māori as a bird of the coast. Its feathers were used in adornment. The utility was recognised. The presence was noted. The connection is historical. It remains relevant. The bird is part of the landscape. The red spot on the bill is a feeding signal. The chicks peck at the red spot. The parent regurgitates food. The mechanism is instinctive. The response is automatic. The nutrition is provided. The cycle continues. This gull is not endangered. It is thriving. It has adapted to human presence better than almost any other native bird. The success is total. The adaptation is complete. It carries on.