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Increasing the Galapagos Penguin Population

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Increasing the Galapagos Penguin Population

PROJECT:

Increasing the Galapagos Penguin Population Through Artificial Nests

PARTNER:

Dr. Dee Boersma and University of Washington

STATUS:

Funded in 2013; ongoing

 

Penguin in nest by Dee Boersma

A penguin using an artificially-constructed nest in Galapagos. (Photo © Dee Boersma)

 

Background

Galapagos penguins are the rarest and most endangered penguin species in the world, and the only penguins that can be found at the equator. Unlike most cold water penguins, they have several adaptations that allow them to tolerate the warmer climate of Galapagos. One of the reasons for their endangered status is that limited options for nest sites exist in the Islands. Many nests used 40 years ago either no longer exist, are used by marine iguanas, or now get flooded.

To increase the population of Galapagos penguins, Dr. Dee Boersma of the University of Washington and her research team have built 120 high-quality, shady nest sites (“penguin condos”) since 2010 on three major islands where penguins currently breed — Isabela, Fernandina, and Bartolomé. The nests were constructed out of natural materials such as lava rocks and are monitored two to three times per year to determine if artificial nest sites do, in fact, increase reproduction and reproductive success of penguins when food is available.

The long-term goals of this project are to reverse the decline of the Galapagos penguin population, and to strengthen the population so that it can better withstand the impacts of more frequent and intense climate fluctuations caused by El Niño events.

Results

As of February 2015, 13 of the constructed nests sites contained eggs or chicks, all located on the Mariela Islands in Isabela Island’s Elizabeth Bay — an area with cold, nutrient-rich waters where most of Galapagos’ penguins live. Since the first artificial nests were built in 2010, 24% of the total active nests (nests containing eggs or chicks) have been constructed nests. In the Mariela Islands, constructed nests account for up to 43% of penguin breeding activity. These results indicate that constructed nests do appear to help the penguins reproduce successfully, and that the construction of additional quality nest sites in the Marielas will allow this trend to continue.

Dr. Boersma and her team have recommended that the Galapagos National Park create a marine protected area in Elizabeth Bay, as the Mariela Islands located in the Bay represent the highest density breeding area for Galapagos penguins. Providing special protection for this area will also benefit many other species of seabirds, marine mammals, and fish. Dr. Boersma also recommends creating a second Penguin Conservation Zone around Bartolomé Island.

Citizen Science

Dr. Boersma is currently compiling a photo database with the help of visitors to the Islands, a form of citizen science whereby visitors upload their photos of Galapagos penguins with the date and location of the photo. From this database, her research team can determine when penguins are molting and track when juveniles appear in the population. To learn more about the project and to submit photos, visit: iGalapagos.org.

Increasing the Galapagos Penguin Population: Current Projects

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