@article{davidson_2009,  title={Diverse uses of feathers with emphasis on diagnosis of avian viral infections and vaccine virus monitoring},  volume={11},  ISSN={1516-635X},  url={https://doi.org/10.1590/S1516-635X2009000300001},  DOI={10.1590/S1516-635X2009000300001},  number={3},  journal={Brazilian Journal of Poultry Science},  publisher={Fundação de Apoio à Ciência e Tecnologia Animal},  author={Davidson, I},  year={2009},  month={Jul},  pages={139–148} }