Sousa BF. Ecology of mating patterns and sexual selection in dickcissels breeding in managed prairie.  2012;PhD Dissertation:1 -166. Available at: http://uknowledge.uky.edu/biology_etds/17/.

Sousa BF, Stewart SLM. Design and effectiveness of a novel trap for capturing nesting songbirds. Journal of Field Ornithology. 2011;82:425 -429. doi:10.1111/j.1557-9263.2011.00346.x.