ALARM CALLS OF NESTING SOUTHERN HOUSE WRENS (TROGLODYTES MUSCULUS)

作者：Gabriela Corral M; Carro Mariana E; Fernandez Gustavo J

来源：Ornitologia Neotropical, 2012, 23(2): 251-260.

• Southern House Wren
• Troglodytes musculus
• Troglodytidae
• communication
• calling rate
• call structure

We examined the structure and characteristics of alarm calls uttered by nesting Southern House Wrens (Troglodytes musculus) during the 2007-2008 breeding seasons. We took multiple structural measures of 221 calls uttered by breeding individuals and used multivariate analyses to classify them. We recognized two distinctive alarm calls, named Type I and Type II. Type I calls were longer in duration and had higher frequencies than Type II calls; however, birds used Type II calls at a higher rate. Given the structural differences found between both call types; we propose that each call type has a different function, which remains to be tested. Accepted 25 June 2012.

• 出版日期2012