@article{PB-794045E131D60F16731D,
  title = {White-throated sparrows calibrate their magnetic compass by polarized light cues during both autumn and spring migration},
  author = {Rachel Muheim and John B. Phillips and Mark E. Deutschlander},
  journal = {Journal of Experimental Biology},
  year = {2009},
  doi = {10.1242/jeb.032771}
}