Bird song as a signal of aggressive intent

By W. A. Searcy, Rindy C. Anderson, S. Nowicki. Behavioral Ecology and Sociobiology, 2006

218 citations recorded by the source corpus.

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Low-amplitude song predicts attack in a North American wood warbler (2010, methodology): “…in song sparrows, Melospiza melodia, and swamp sparrows, Melospiza georgiana, and found that the number of low-amplitude ‘soft’ songs, a display that had not previously received much empirical attention, was a particularly strong predictor of attack (Searcy et al. 2006; Ballentine et al. 2008).”
Song as an aggressive signal in songbirds (2009, background): “discriminant function predicting attack in preference to proximity (Searcy et al. 2006).”
Soft Song in Song Sparrows: Acoustic Structure and Implications for Signal Function (2008, background): “This position corresponds to the majority of aggressive singing and signaling behaviors observed in previous experiments (Searcy et al. 2006).”
Reliable aggressive signalling in swamp sparrows (2008, methodology): “Experimental methods follow those used in Searcy et al. (2006), which can be consulted for additional details, including equipment specifications.”
Chest Color and Social Status in Male Geladas (Theropithecus gelada) (2009, unknown): “However, if activity itself is a reliable indicator of condition (Riechert 1978) or aggressive intent (Searcy et al. 2006), then chest color resulting from increased activity could still be a sexually selected signal.”