PeerJ Author 170 Points Contributions by role Author 135 Preprint Author 35 Contributions by subject area Animal Behavior Ecology Zoology Stefania Casagrande PeerJ Author Summary Animal Behavior Ecology Evolutionary Studies Zoology Websites ResearchGate PeerJ Contributions Articles 1 Preprints 1 October 6, 2016 Positive effect of dietary lutein and cholesterol on the undirected song activity of an opportunistic breeder Stefania Casagrande, Rianne Pinxten, Erika Zaid, Marcel Eens https://doi.org/10.7717/peerj.2512 PubMed 27761321 September 1, 2016 - Version: 1 Positive effect of dietary lutein and cholesterol on the undirected song activity of an opportunistic breeder Stefania Casagrande, Rianne Pinxten, Erika Zaid, Marcel Eens https://doi.org/10.7287/peerj.preprints.2411v1