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Table 5.19. Black-headed gull monthly mean abundance estimates (includes positively identified and proportioned out individuals) and monthly mean densities from aerial survey data within the East Anglia THREE Site only.
Survey Month
January February March April May June July August September October November December
All of the 13 black-headed gulls recorded in the East Anglia THREE site and 4km buffer were observed flying (Table 5.20). Of the flying birds two were recorded flying at potential collision height (Table 5.20).