The Daily Telegraph reports gulls and feral pigeons can survive by scavenging from humans while other birds suffer from the loss of wild spaces. A poll by Gardeners’ World magazine found that sightings of some of Britain’s best-loved garden birds had dropped over the past two years, while readers were increasingly spotting the scavenging birds. While overall sightings grew by 11 per cent, the poll, which had 2,500 respondents, revealed that some birds were being spotted less often, including blackbirds, blue tits and sparrows.