Written on January 20, 2026 by Chloe Rabinowitz; edited by Kalyna Durbak Our field work crew has been here for a while! Sofia Denkovski, Anna Testorf, and Chloe Rabinowitz arrived in Punta Tombo on January 6th, followed by Dr. Dee Boersma on the 12th. We have been getting well acquainted with all our active research nests and have been progressing […]
Written by Meredith Honig and Bryn Carter The austral spring field season at Punta Tombo in 2025 wrapped up on a high note as chicks continued to grow and more juveniles and non-breeding adults started showing up in larger numbers on the beaches. This would be the first time the juveniles and non-breeding adults were back from being at sea
Be sure to check out Eric Wagner’s newest essay for The Last Word On Nothing called Saint Rock! Featured photo credit: Eric Wagner
Written by Dr. Eric Wagner Starting the season – stake survey and tag hunting In late October, Dr. Eric Wagner and Abrahms graduate student Meredith Honig traveled to Argentina to start the 2025-2026 field season. After getting a provisional permit from the provincial authorities, they arrived at Punta Tombo on October 29. They then spent the next two days completing
Written by Dr. Eric Wagner Thanks once again to generous support from Zoo Augsburg, research scientist Dr. Eric Wagner and computer specialist Pearl Wellington traveled to Punta Tombo in early March for a couple of weeks to mark the end of the breeding season. Eric and Pearl went to deploy twenty geolocating time-depth recorder (GLD) tags to female and male
Read Eric Wagner’s newest post for The Last Word called Behavioral Observation, where Eric tries to ground-truth accelerometry data to determine how often incubating penguins go down to the ocean to drink water, move, and possibly admire their interior decorating skills.
This field season is the first time we’ve been at Punta Tombo, Argentina persistently from October to March since before the pandemic! We’ve seen chicks hatch and watched them grow into chubby fledglings. Unfortunately many died in December with their bellies full; we suspect it was due to toxic algae, which could also be the cause of the 71 southern
Animals can change their behavior to survive in environments that are constantly changing, a skill known as behavioral plasticity. Scientists have suggested that some animals might show “plasticity syndromes,” meaning they are flexible in many behaviors at the same time. Plasticity syndromes in wild vertebrates could help them respond better to change. To test this idea, researchers studied Magellanic penguins
Be sure to check out Eric Wagner’s newest essay for The Last Word On Nothing, called “Snapshot: The Penguins at Twilight” ! Featured image photo credit: Eric Wagner
From the abstract: “We found that Spheniscus penguins have pale feet at hatching and the feet become darker with age throughout the lives of individuals. We showed that we can accurately predict the age structure of a colony of Magellanic penguins Spheniscus magellanicus, but not the ages of individual penguins, based on a sample of foot colors.” Authors: Ginger Rebstock,
“Using a multidecadal dataset on Magellanic penguins, we show that despite strong selection on body size, some environmental conditions favored larger bodies, and others favored smaller bodies, thus preventing consistent evolution in one direction or the other […] Such findings highlight that fluctuating selection can be driven by environmental variability, and these processes could eliminate the possibility of evolutionary rescue
Thanks to the generous support of Zoo Augsburg in Germany, Dr. Eric Wagner and Katie Holt were able to return to Punta Tombo for a couple of weeks in April. There, they put twenty satellite tags on penguins—ten females and ten males—that were about to start their post-breeding migration. As of today 18 satellite tags are still transmitting to our
The Abrahms Lab is growing! This fall we will have two new grad students join us in the Center: Meredith HonigPenguin Camp Meredith is interested in how species interactions shape ecological communities and wildlife population dynamics, especially in the implications of global climate change on these processes. She received a BS in Wildlife and Conservation Biology from the University of
We continued our Punta Tombo field season this winter with graduate student Erik Johansson, former undergrad lab member Chloe Rabinowitz, and program coordinator Kalyna Durbak staying on site from January 12 through February 21. Our goal for this trip was to attach GTA* and GPS tags on adult penguins who were actively feeding chicks in order to log their foraging
Full title: A fearful scourge to the penguin colonies: Southern giant petrel (Macronectes giganteus) predation on living Magellanic penguins (Spheniscus magellanicus) may be more common than assumedAuthors: Dr. Eric Wagner, Dr. Ginger Rebstock and Dr. P Dee BoersmaJournal: Marine Ecology Press SeriesDOI: 10.1002/ece3.11258 Excerpt from abstract: Southern giant petrels (Macronectes giganteus) are important consumers that range across the oceans throughout
