Strix aluco - Tawny owl - Allocco

Strix aluco

RECORDING 1
DATE/TIME: 18/september/2004 (10 p.m.) - IDENTIFICATION AND BEHAVIOUR: one bird calls from an artificial mixed woods (pines, oaks, ashes, cypresses) near the banks of the lake. After several minutes of uninterrupted vocalization, it flies into a willow wood and calls again. - POSITION: Perotto Lake (an artificial reservoir with a barrage), LAT.N 4237'/LONG.E 1115' - ALTITUDE: +70 m. - VOCALIZATION TYPE: advertising call (territorial) elicited by a playback of conspecific call. - SEX/AGE: adult male - COMMENT: the response to playback was particularly strong: the owl answered immediately to playback, approached quickly the recorder and flew over my head. It called about 30 minutes after the playback stimulus. - MIC: (A)

RECORDING 2
DATE/TIME: 17/june/2006 (10.30 p.m.) - IDENTIFICATION AND BEHAVIOUR: the owl - not seen - is perched in a deciduos wood. Hilly zone with cutivated land and woods. - POSITION: Capanne (Massa Marittima - GR), LAT.N 4302'/LONG.E 1088' - ALTITUDE: +180 m. - VOCALIZATION TYPE: advertising call (territorial). - SEX/AGE: adult male - COMMENT: The owl calls spontaneously. Time interval between calls has been reduced in the audio sample and in the spectrograms. Average interval between calls: 13.8 s (S.D. = 1.37; range = 12.1 / 15.2; n = 4) - MIC: (A)

RECORDING 3
DATE/TIME: 22/may/2010 (10.30 p.m.) - IDENTIFICATION AND BEHAVIOUR: the owl - not seen - is perched in a mainly deciduos wood. Zone with small grazed meadows and woods. - POSITION: Cornacchino near Selvena, LAT.N 4276'/LONG.E 1166' - ALTITUDE: +850 m. - VOCALIZATION TYPE: advertising call (territorial). - SEX/AGE: adult male - COMMENT: The owl calls in response to playback of conspecific territorial call. Time interval between calls has been reduced in the audio sample and in the spectrograms. Average interval between calls: 10.9 s (S.D. = 1.91; range = 8.4 / 13.6; n = 9) - MIC: (P)

RECORDING 4
DATE/TIME: 9/july/2011 (10.00 p.m.) - IDENTIFICATION AND BEHAVIOUR: the owl - not seen - is perched in a thick deciduos wood on the top of a mountain. Zone with wide and thick woods. - POSITION: woods over the village of Montevitozzo, LAT.N 4274'/LONG.E 1169' - ALTITUDE: +800 m. - VOCALIZATION TYPE: chicks and male calls. - SEX/AGE: chicks still not fledged, sex unknown - COMMENT: Chicks utter two different call types (see spectrograms) and male owl answers to playback stimulation. Background: crickets (erased from spectrograms). - MIC: (P)

RECORDING 5
DATE/TIME: 22/october/2011 (11.00 p.m.) - IDENTIFICATION AND BEHAVIOUR: the owls - not seen - are perched near a road that goes across a wide mixed forest. Zone with wide and thick woods. - POSITION: a forest near Selvena (GR), LAT.N 4278'/LONG.E 1164' - ALTITUDE: +830 m. - VOCALIZATION TYPE: calls of female and male in response to playback of conspecific. - SEX/AGE: adult female and male - COMMENT: The birds are quite far from the microphone. Female calls are at least of two different types and seem a reinforcement of territorial defense provided by male calls (check spectrograms). Note that there is also a wing clapping, made by one or both the pair members. - MIC: (P)

RECORDING 6
DATE/TIME: 22/october/2011 (10.30 p.m.) - IDENTIFICATION AND BEHAVIOUR: same birds as for Recording 5 in the same place. - POSITION: a forest near Selvena (GR), LAT.N 4278'/LONG.E 1164' - ALTITUDE: +830 m. - VOCALIZATION TYPE: calls of female in response to playback of conspecific. - SEX/AGE: adult female - COMMENT: The birds are quite far from the microphone. Female calls are at least of two different types; one type is the same as for Recording 5 (at the end of the cut) and the other is a "new" one. - MIC: (P)

RECORDING 7
DATE/TIME: 22/october/2011 (11.15 p.m.) - IDENTIFICATION AND BEHAVIOUR: same birds as for Recording 5 in the same place. - POSITION: a forest near Selvena (GR), LAT.N 4278'/LONG.E 1164' - ALTITUDE: +830 m. - VOCALIZATION TYPE: male territorial call in response to playback of conspecific. - SEX/AGE: adult male - COMMENT: Time interval between calls has been reduced in the audio sample and in the spectrograms. Average interval between calls: 15.0 s (S.D. = 2.54; range = 13 / 17.9; n = 3). Background: barking dog. - MIC: (P)


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