Fig. 2From: GPS tracking reveals landfill closures induce higher foraging effort and habitat switching in gullsComplete foraging trips by all tracked lesser black-backed gulls from Walney and Ribble before (yellow) and after (purple) landfill closures. N denotes the number of birds tracked in each year (For number of foraging trips see Fig. 1). Colony locations are marked with navy (Walney) or orange (Ribble) diamonds. Focal landfills, Jameson Road Landfill (Walney) and Arpley Tip (Ribble) are marked with red trianglesBack to article page