Andrea Raya Rey

Andrea Raya Rey is an Argentinian ecologist and researcher, best known for her work on seabirds. Her research focuses on breeding biology, foraging ecology, conservation, and human impact in Argentina, Patagonia, and Sub-Antarctic Islands. She has been studying and aiding in seabird conservation efforts for over 20 years.

Early life and education From a very young age, Raya Rey was fascinated by the sea. During her undergraduate research, she studied dolphins in Southern Argentina. It was through this research that she was introduced to penguins. Her research focuses on how human impact affects the colonies. Some specific examples include how changes in sea temperature impact penguin's and their prey and how ocean pollution is reaching remote penguin colonies. She analyzes these behaviors to determine the health of the colonies and broader implications to the marine environment.

One major finding by Raya Rey and others is that there are three species of rockhopper penguins, a type of crested penguin. Rey and her team made this discovery using genetic testing and analysis. Crested penguin populations are very vulnerable to climate change. The assessment of these populations as distinct species may help create better conservation guidelines to protect them. Dr. Andrea Raya Rey, as well as other researchers, are now able to use drones to help monitor the populations of rockhoppers, and many other species of penguins around Tierra del Fuego. The use of this technology allows researchers to get close and learn about the daily life habits of the penguin populations without disturbing them. Being able to see how climate change, pollution, and other human impacts effect these penguins every day is an important factor for conservation efforts.

When tourism to Tierra del Fuego began increasing in 2005, Raya Reyfounded the group Comprosimo Onashaga. She is a member of the Penguin Watch team, a research group focused on understanding threats to penguin colonies on Isla de los Estados.

Media appearances Raya Rey also appears in episode four, "The Far South" of the nature documentary series "Patagonia: Life on the Edge of the World", narrated by Pedro Pascal.

Selected works

Raya Rey, Andrea & Balza, Ulises. (2026). Correction to: Biodiversity and Conservation of Isla de los Estados (Chuani-sin). 10.1007/978-3-032-13630-5_16. Raya Rey, Andrea Nélida; Saenz Samaniego, Ricardo Andres; Petracci, Pablo Fabricio; New records of South American sea lion Otaria flavescens predation on southern rockhopper penguins Eudyptes chrysocome at Staten Island, Argentina; Springer; Polar Biology; 35; 2; 2–2012; 319–322 Santaniello, Camille & Dodino, Samanta & Pütz, Klemens & Raya Rey, Andrea. (2025). Comprehensive stressor analysis for breeding Magellanic and Southern Rockhopper Penguins. Journal for Nature Conservation. 89. 127152. 10.1016/j.jnc.2025.127152. Raya Rey, Andrea & Balza, Ulises & Domato, Ignacio & Zunino, Francisco. (2022). New Magellanic penguin Spheniscus magellanicus colony in a subantarctic island. Polar Biology. 45. 1–6. 10.1007/s00300-022-03093-6.