Acknowledgements
All procedures conducted in this study comply with the current National
and Provincial laws, and were approved by the University Bioethics
Committee. This study was funded by Wildlife Conservation Society
(Wildlife Health Fund, www.wcs.org), Morris Animal Foundation
(www.morrisanimalfoundation.org, Grant No. D08ZO-304), and CONICET
(www.conicet.gob.ar, Grant No. PIP11220100100261). We would like to
thank Dr. Martín de la Peña for the ornithological. The authors declare
no competing interests.