Research shows the number of guano birds has dropped by more than three-quarters in the past three years to around 500,000, according to local biologists, down from a population of 4 million in 2022.
The decline in gull numbers must be a cause for concern ...Urban gulls excrete guano copiously. It covers cars, buildings and streets in a steady, noxious rain ... Some towns, such as Exmouth, avoid this by mounting campaigns to prevent gull-feeding ... Derby ... .