Bonney Rick, Shirk Jennifer L, Phillips Tina B, Wiggins Andrea, Ballard Heidi L, Miller-Rushing Abraham J, Parrish Julia K
Cornell Lab of Ornithology, Cornell University, Ithaca, NY 14850, USA.
Science. 2014 Mar 28;343(6178):1436-7. doi: 10.1126/science.1251554.