Fig. 4From: GPS tracking reveals landfill closures induce higher foraging effort and habitat switching in gullsTotal number of GPS fixes from tagged lesser black-backed gulls within focal (yellow) and other (purple) landfills in the years before and after landfill closure. At both colonies, the overall number of landfill fixes dropped dramatically following closure of the focal site. Birds from Ribble occasionally visited Arpley Tip following closure whilst birds from Walney ceased visiting Jameson Road Landfill Site altogetherBack to article page