The Red-billed Gull is native to New Zealand and is the most common small gull seen around coasts. Adult males and females have the same appearance all year round.
The Red-billed Gull used to be considered a subspecies of the Silver Gull of Australia - which looks identical - but is now said to be a totally different species.
Like most gulls, they gather in flocks.
The juvenile Red-billed has a black bill.