Reichard, D. G., Kimmitt, A. A., Welklin, J. F., & Ketterson, E. D. (2017). Condition-and context-dependent factors are related to courtship behavior of paired and unpaired males in a socially monogamous songbird. The Auk. Link

Reichard, D.G. and Welklin, J.F. 2015. On the existence and potential functions of low-amplitude vocalizations in North American birds. The AUK. Link