Does twitter song amplitude signal male arousal in redwings (Turdus iliacus)?

• Published in: Behaviour Vol. 147; no. 3; pp. 353 - 365
• Main Authors: Lampe, H.M., Balsby, T.J.S., Espmark, Y.O., Dabelsteen, T.
• Format: Journal Article
• Language: English
• Published: The Netherlands Brill 01.01.2010; BRILL
• Subjects: Aerial locomotion; Animal communication; Bird songs; INTERACTIVE PLAYBACK; Male animals; REDWING; Signals; Singing; Social media; SONG AMPLITUDE; Songbirds; Sound pressure; Sparrows; Turdus; TURDUS ILIACUS; TWITTER SONG

Bird songs may vary in amplitude for several reasons. Variations due to differences in environmental conditions are well known but whether signal information varies with song amplitude is less well known. In some species quiet songs are heard as a soft twitter. These twitter songs are common in Turd...