Subtitle:

Acta Ornithologica, vol. 40, no. 1 ; Osobnicze i międzypłciowe zróżnicowanie głosów u monomorficznej drzewicy białolicej ; Call differences in the white-faced whistling duck

Contributor:

Museum and Institute of Zoology, Polish Academy of Sciences

Publisher:

Museum & Institute of Zoology

Place of publishing:

Warszawa

Description:

Bibliogr. p. 50-51 ; P. [43]-52 : ill. ; 27 cm ; Abstract. pol.

Type of object:

Journal/Article

Abstract:

The White-faced Whistling Duck is a waterfowl species lacking any differences in ornamentation, coloration, size or behavior between the sexes. For distant communication, this species uses loud whistles. We analyzed 12 spectral parameters of 344 whistles from 23 captive adult ducks (14 males and 9 females). Discriminant analysis showed 94% correct assignment to an individual (N = 279 calls from 14 birds; 15–22 calls per bird). Separately for 8 males (162 calls) and for 6 females (117 calls), discriminant analysis showed 99% and 93% correct assignment to individuals respectively. Discriminant analysis for sex (N = 86; 3 calls from each of 14 males and 5 calls from each of 9 females) showed 100% correct assignment. Intersexual differences were governed by frequency parameters, the values of which were significantly higher in females than in males. Cluster analysis showed that differences between sexes were expressed significantly more strongly than the individual differences. The fact that the “acoustical keys” differed as regards the identification of individual birds or their sex may significantly enhance the reliability of acoustical recognition systems in the White-faced Whistling Duck. The data are discussed in the context of the biology of the White-faced Whistling Duck and significant intersexual differences in syringial and tracheal anatomy, which may be responsible for the sharp distinctions between the sexes in the calls of this species.

Relation:

Acta Ornithologica

Volume:

40

Issue:

1

Start page:

43

End page:

52

Detailed Resource Type:

Journal

Format:

text/xml

Resource Identifier:

oai:rcin.org.pl:55531

Source:

MiIZ PAN, call no. patrz sygn. czas. P.257, Vol. 40, No 1 ; MiIZ PAN, call no. patrz sygn. czas. P.4568, Vol. 40, No 1 ; click here to follow the link

Language:

eng

Language of abstract:

pol ; eng

Rights:

Rights Reserved - Free Access

Terms of use:

Copyright-protected material. May be used within the limits of statutory user freedoms

Digitizing institution:

Museum and Institute of Zoology of the Polish Academy of Sciences

Original in:

Library of the Museum and Institute of Zoology of the Polish Academy of Sciences

Access:

Open