@article{barros_cintra_2009,  title={The effects of forest structure on occurrence and abundance of three owl species (Aves: Strigidae) in the Central Amazon forest},  volume={26},  ISSN={1984-4670},  url={https://doi.org/10.1590/S1984-46702009000100014},  DOI={10.1590/S1984-46702009000100014},  number={1},  journal={Zoologia (Curitiba)},  publisher={Sociedade Brasileira de Zoologia},  author={Barros, Obed G. and Cintra, Renato},  year={2009},  month={Mar},  pages={85–96} }