@article{ragusa-netto_2000,  title={Raptors and "campo-cerrado" bird mixed flock led by Cypsnagra Hirundinacea (Emberizidae:Thraupinae)},  volume={60},  ISSN={0034-7108},  url={https://doi.org/10.1590/S0034-71082000000300011},  DOI={10.1590/S0034-71082000000300011},  number={3},  journal={Revista Brasileira de Biologia},  publisher={Instituto Internacional de Ecologia},  author={RAGUSA-NETTO, J.},  year={2000},  month={Aug},  pages={461–467} }