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 […]
Field updates: Argentina, March 2025 Read More »
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.
New essay by Eric Wagner: Behavioral Observation Read More »
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
Field update: Argentina, December 2024 – January 2025 Read More »
From abstract:“Using a 40-year dataset on free-ranging Magellanic penguins, we find evidence of both positively and negatively correlated behavioural plasticities. Plasticity did not strongly affect lifetime reproductive success, but its effect on interannual performance varied significantly by environmental context: plasticity reduced success in average oceanic conditions, increased success in anomalously productive conditions and, contrary to expectation, did not buffer against
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
Eric Wagner’s newest essay – “Snapshot: The Penguins at Twilight” Read More »
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,
Foot darkening with age in Spheniscus penguins: applications and functions Read More »
“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
Field updates: Argentina, April 2024 Read More »
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
Welcome Marie-Pier and Meredith! Read More »
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
Field Updates: Tombo Jan-Feb 2024 Read More »
