Acoustic basis for a possible recognition of parents by offspring in the House Martin, Delichon urbica

Authors: URIBE, F. and HOSTAU, J.

Published: Volume 35(2), December 1988. Pages 284-290.

Language: Spanish

Original Title: Bases acústicas para un posible reconocimiento de los padres por sus crías en el Avión Común, Delichon urbica

Keywords: acoustic recognition, breeding period, Delichon urbica and sonogram.

Summary:

The acoustic repertoire of the House Martin, Delichon urbica, is short but the vocalizations near the nest are very complex and variable. The spectrograms (frequency-time) of these calls are hard to compare and classify. In order to simplify the analysis of the variability among the vocalizations of adults that feed different nests the averaged spectra (frequency-intensity) of the acoustic signals sent by adults before the entrance to 10 nearby nests have been obtained. These data allow a correct discrimination between the breeding pairs. The capability of the pattern of frecuencies for the vocal recognition of parents by their offspring is suggested.

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