@article{brandt_hasenack_laps_hartz_2009,  title={Composition of mixed-species bird flocks in forest fragments of southern Brazil},  volume={26},  ISSN={1984-4670},  url={https://doi.org/10.1590/S1984-46702009000300013},  DOI={10.1590/S1984-46702009000300013},  number={3},  journal={Zoologia (Curitiba)},  publisher={Sociedade Brasileira de Zoologia},  author={Brandt, Cláudia S. and Hasenack, Heinrich and Laps, Rudi R. and Hartz, Sandra Maria},  year={2009},  month={Sep},  pages={488–498} }