How long does a seagull live? The answer to this question depends on the species of seagull. For example, the common gull (Larus canus) has an average lifespan of 15 to 25 years, while the black-legged kittiwake (Rissa tridactyla) has an average lifespan of 20 to 30 years. The oldest known seagull was a black-tailed gull (Larus crassirostris) that lived to be 49 years old.
There are a number of factors that can affect the lifespan of a seagull. These factors include: