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Feral Horses Show Evidence of Societal Structure

Feral Horses Show Evidence of Societal Structure

Reporting in Scientific Reports, an international research team of researchers from Kyoto University and University of Strasbourg has used drones to investigate the "multilevel societal structure" of the feral horses in Serra D'Arga, Portugal.

In a multilevel society, individuals are structured in stable groups that build relationships with other groups to form a higher level of organization. For example, people live in a multilevel society where families form a local community that in turn combines with others to form a higher social organization like suburbs and cities.

The phenomenon has been studied in animals such as primates and whales. Studying multilevel societies in animals can give us insights into how these relationships function, but their mechanisms are still understudied due to a lack of quantitative data. "That is why we elected to study the social apparatus of feral ," explains research team leader Shinya Yamamoto.

The team set up an observation area of a well-documented group of horses in Serra D'Arga, Portugal. Their drone took aerial photos at 30-minute intervals, allowing them to precisely record the locations of each horse and the exact distances between the individuals.

The use of drones enabled them to identify 121 individuals within 23 specifically defined groups called units, and 5 solitary . Two categories were used to describe the groups: "Harems"—mixed-sex with one or two adult males—and all male "bachelor groups."

The team's data analysis found three pieces of evidence: 1) small social organizations or "units" exist and they will merge to form higher-level "herds"; 2) bachelor groups stay in the periphery of a herd; and 3) large harems were more likely to occupy the center of the herd, explains first author Tamao Maeda.

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Drone Flight & Baling Success at Last!

Video: Drone Flight & Baling Success at Last!

Drone Flight & Baling Success at Last!

After weeks of rain delays and frustration, we finally have a reason to smile — it’s hay time again at Ewetopia Farms! In today’s episode, we head out to the fields where Arnie is baling hay, and I attempt my second drone flight to capture it all from the air. The drone still had some hiccups, but I managed to get some aerial footage of the baling process.

Back at the farm, the work doesn’t stop. Arnie brings the bales home, and the next critical step begins — wrapping and stacking the bales to make haylage. This process is essential for preserving feed for our sheep and ensures they have nutritious forage in the months ahead.

It’s a good day on the farm — the sun is out, the drone is flying (sort of!), and we’re making progress. Join us for a satisfying and productive day that brings a long-awaited sigh of relief to this year’s challenging hay season.

?? Let us know in the comments: Have you had to deal with weather delays this season?

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