ABSTRACT A joint survey, by RSPB and the BBC Radio 4 ‘Today’ programme, investigated the use of houses for nesting by four bird species (Common Swift Apus apus, House Martin Delichon urbica, Common Starling Sturnus vulgaris and House Sparrow Passer domesticus).Almost 10,000 completed questionnaires were received, representing a wide range of house types in rural, suburban and urban locations,

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