@article{campos_hernández_arizaga_miranda_amezcua_2005, 
  title={Sex differentiation of Corn BuntingsMiliaria calandrawintering in northern Spain}, 
  volume={22}, 
  DOI={10.1080/03078698.2005.9674325}, 
  publisher={Informa UK Limited}, 
  author={Campos and Hernández and Arizaga and Miranda and Amezcua}, 
  year={2005}
  }