Being inside nest boxes: does it complicate the receiving conditions for Great Tit Parus major females?
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Being inside nest boxes: does it complicate the receiving conditions for Great Tit Parus major females? / Blumenrath, Sandra Helene; Dabelsteen, Torben; Pedersen, Simon Boel.
In: Bioacoustics - the International Journal of Animal Sound and its Recording, Vol. 14, No. 3, 2004, p. 209-223.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Being inside nest boxes: does it complicate the receiving conditions for Great Tit Parus major females?
AU - Blumenrath, Sandra Helene
AU - Dabelsteen, Torben
AU - Pedersen, Simon Boel
N1 - Keywords: communication networks, sound degradation, nest boxes, communication range, ranging
PY - 2004
Y1 - 2004
N2 - Birdsong is degraded as it propagates through the habitat. This affects its use as a signal in communication networks, depending on song type as well as sender and receiver location. Nest holes constitute special receiver locations to females of many hole-nesting species. Although such locations are frequently used by females during their fertile period, for instance at dawn when information gathering from singing males may be essential, the conditions for receiving sounds inside nest holes are currently unknown. We investigated these conditions with a sound transmission experiment, in which great tit songs were broadcast in a deciduous forest and rerecorded from both outside and inside a nest box. Several aspects of sound degradation encompassing signal attenuation and distortion were quantified. Attenuation was strongest inside the nest box for both song and background noise. However, the signal-to-noise ratio, which affects song detection and discrimination, was only slightly reduced inside the nest box. Signal distortion, which has implications for both information transfer and ranging, provided conflicting results for the two types of song notes, the highly modulated buzz notes and the less modulated pure notes. These results provide the first evidence that entering nest boxes complicates song reception conditions for female songbirds. We suggest that this may ultimately affect vocally mediated information gathering in the network.
AB - Birdsong is degraded as it propagates through the habitat. This affects its use as a signal in communication networks, depending on song type as well as sender and receiver location. Nest holes constitute special receiver locations to females of many hole-nesting species. Although such locations are frequently used by females during their fertile period, for instance at dawn when information gathering from singing males may be essential, the conditions for receiving sounds inside nest holes are currently unknown. We investigated these conditions with a sound transmission experiment, in which great tit songs were broadcast in a deciduous forest and rerecorded from both outside and inside a nest box. Several aspects of sound degradation encompassing signal attenuation and distortion were quantified. Attenuation was strongest inside the nest box for both song and background noise. However, the signal-to-noise ratio, which affects song detection and discrimination, was only slightly reduced inside the nest box. Signal distortion, which has implications for both information transfer and ranging, provided conflicting results for the two types of song notes, the highly modulated buzz notes and the less modulated pure notes. These results provide the first evidence that entering nest boxes complicates song reception conditions for female songbirds. We suggest that this may ultimately affect vocally mediated information gathering in the network.
M3 - Journal article
VL - 14
SP - 209
EP - 223
JO - Bioacoustics
JF - Bioacoustics
SN - 0952-4622
IS - 3
ER -
ID: 84754