1. Centro de Ciências Biológicas, Departamento de Ornitologia, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil
2. Center for Ecosystem Sentinels, Department of Biology, University of Washington, Seattle, WA, USA
3. Global Penguin Society, Puerto Madryn, Chubut, Argentina
4. CESIMAR, CCT—CENPAT—CONICET, Puerto Madryn, Chubut, Argentina
5. Wildlife Conservation Society, Bronx, NY, USA