RECORDING 1
DATE/TIME: 13/may/2007 (9 a.m.) - IDENTIFICATION AND BEHAVIOUR: Some swifts - well in sight - are flying over a small village, performing aerial pursuits. They are screaming and calling together - POSITION: Piloni, a small village near Roccastrada, LAT.N 43°03'/LONG.E 11°09' - ALTITUDE: +460 m. - VOCALIZATION TYPE: flight calls, screaming-calls. - SEX/AGE: juvenile birds, sex unknown. - COMMENT: Time interval between calls has been reduced in the spectrograms (vertical blue bars) and in the audio sample. The second spectrogram shows calls uttered by two or more birds together (see green box on the spectrogram). Background: human voices and Sparrow (Passer italiae) calls. - MIC: (A)

recording 1 (262 KB) - * - spectrogram 1 (50 KB)

RECORDING 2
DATE/TIME: 2/june/2013 (5 p.m.) - IDENTIFICATION AND BEHAVIOUR: Three swifts - well in sight - are flying over a small village, performing aerial pursuits. They are screaming and calling together. - POSITION: Gerfalco village, LAT.N 43,146°/LONG.E 10,978° - ALTITUDE: +765 m. - VOCALIZATION TYPE: flight calls, screaming-calls. - SEX/AGE: juvenile birds, sex unknown. - COMMENT: Recording was stopped for 4, 1 and 19 minutes (see blue bars in the spectrograms). Note that there are three call series produced by the bird flock and two single calls produced by one bird. - MIC: (P)

recording 2 (561 KB) - * - spectrogram 2 (96 KB)

RECORDING 3
DATE/TIME: 13/june/2022 (7.30 a.m.) - IDENTIFICATION AND BEHAVIOUR: In an alpine village a Swift flock - well in sight - is flying near me and call. - POSITION: Obereggen, near Bolzano, LAT.N 46,384°/LONG.E 11,525° - ALTITUDE: +1600 m. - VOCALIZATION TYPE: flight calls, screaming-calls. - SEX/AGE: juvenile birds, sex unknown. - COMMENT: The first long call series is a typical vocalisation produced by a flock. - MIC: (P + Tascam DR100 MK3)

recording 3 (467 KB) - * - spectrogram 3 (58 KB)

RECORDING 4
DATE/TIME: 13/may/2024 (6.45 p.m.) - IDENTIFICATION AND BEHAVIOUR: A Swift - out of sight - is flying above a forest edge and cultivated fields, it calls. - POSITION: Poderone near Magliano in Toscana, LAT. N. 42° 36'/LONG. E 11° 16' - ALTITUDE: +130 m. - VOCALIZATION TYPE: flight calls. - SEX/AGE: unknown. - COMMENT: These calls are different and slightly lower pitched from the previous ones. Background: Great tit song. - MIC: (P + Tascam DR100 MK3)

recording 4 (126 KB) - * - spectrogram 4 (23 KB)