A response of sylviids, primarily of reed warblers, to the playback of specific songs in some passerines was studied. The birds that stopped flying were mist-nettled at a specially designed field station. The distribution of birds that were captured at night and dawn during the presentation of different acoustic stimuli is discussed. The reed warbler song attracted the highest number of migrants, both reed warblers themselves and other birds dwelling in wetlands. The possible reasons for responses of nocturnally flying birds to acoustic stimuli and the role of specific songs during the selection of a site for a migratory stopover are discussed.