RECORDING 1
DATE/TIME: 11/june/2003 (10.30 p.m.) - IDENTIFICATION AND BEHAVIOUR: the nightjar is flying in an oak wood. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: typical territorial call. - SEX/AGE: probably adult male. - COMMENT: The audio sample and relative spectrograms show a small fragment of one uninterrupted vocalization lasting more than 2 minutes charachterized by tremolo with about 27/29 units per second. Each call bout may consist of only one uninterrupted phrase lasting several minutes or of some shorter phrases lasting 20/60 seconds. The phases with lower pitched and faster tremolo (see blue arrows in spectrograms) possibly are due to change of breathing pattern with inhalation. Duration of these lower pitched phases: mean 0,62 sec. (S. D. 0,25; range 0,27/1,03; n=25). Interval between lower pitched phases: mean 3,76 sec. (S. D. 2,06; range 1/9,27; n=25). Data from 3 different birds. - MIC: (U)

recording 1 (116 KB) - * - spectrogram 1 (62 KB)

RECORDING 2
DATE/TIME: 30/may/2007 (10 p.m.) - IDENTIFICATION AND BEHAVIOUR: the nightjar is perched in an oak wood and calls. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: typical territorial call. - SEX/AGE: probably adult male. - COMMENT: The audio sample and the spectrograms show one complete call bout. After a very short pause (0.2 s) the call restarts and lasts for more than 2 minutes. - MIC: (A)

recording 2 (980 KB) - * - spectrogram 2 (260 KB)

RECORDING 3
DATE/TIME: 8/july/2007 (9.15 p.m.) - IDENTIFICATION AND BEHAVIOUR: in the thick oak wood there is at least a pair of Nightjar. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: wing clapping. - SEX/AGE: unknown. - COMMENT: It is after the sunset, but there is still some light. This wing clapping is the very first sign of activity of the birds. Immediately after this I can hear a Nightjar singing loudly from its perch. - MIC: (P)

recording 3 (190 KB) - * - spectrogram 3 (20 KB)

RECORDING 4
DATE/TIME: 24/may/2008 (9.15 p.m.) - IDENTIFICATION AND BEHAVIOUR: between the oak wood and the cultivated fields there is at least one pair of Nightjar flying (out of view). They call as well. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: frog-like "quewk" call, in flight(?) - SEX/AGE: unknown. - COMMENT: Background Nightjar and Nightingale. - MIC: (P)

recording 4 (450 KB) - * - spectrogram 4 (32 KB)

RECORDING 5
DATE/TIME: 6/august/2009 (9 p.m.) - IDENTIFICATION AND BEHAVIOUR: the nightjar (not seen) is perched in an oak wood and calls. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: typical territorial call - SEX/AGE: unknown. - COMMENT: This is the end of a long call bout. Note the wing clapping intermingled to the queue ending the call phrase. Background crickets. - MIC: (P)

recording 5 (640 KB) - * - spectrogram 5 (160 KB)

RECORDING 6
DATE/TIME: 16/august/2011 (9 p.m.) - IDENTIFICATION AND BEHAVIOUR: a nightjar (not seen) is flying near an oak wood and calls. - POSITION: Poderone near Magliano in Toscana, LAT.N 42°36'/LONG.E 11°17'- ALTITUDE: +130 m. - VOCALIZATION TYPE: frog-like "quewk" call - SEX/AGE: unknown. - COMMENT: The spectrogram shows a different morphology from Recording 4. Background: crickets. Time interval between calls has been reduced in the audio sample and in the spectrogram; true intervals: 2.4 and 48 s - MIC: (P)

recording 6 (315 KB) - * - spectrogram 6 (20 KB)