Informed horses are influential in group movements, but they may avoid leading.

The research examines how informed horses play a key role in group movements, particularly in leading their group to food sources, though they may avoid taking on a leadership role. The study takes into account the social hierarchy in horse groups as it relates to access to resources.

Understanding Group Movements

• The research looks at how animals in cohesive groups, such as horses, make decisions. The consensus is that these decision-making processes are distributed socially i.e., collective decision making is normally influenced by individual knowledge within the group.
• However, the study also notes that this collective decision making is not always the case due to arising conflicts of interest among group members, particularly when resources are limited or highly attractive. In such cases, higher-ranking animals might prevent others from accessing resources, while subordinates may withhold information about the location of these resources.

Role of Informed Horses

• The researchers examined how informed horses influenced recruitment processes in four groups of horses. “Informed” horses refers to those which knew the location of a preferred food source. These horses were observed to approach the food site more consistently and were followed by a larger number of group members than their uninformed counterparts.
• However, the recruitment process was seen to be mostly passive. Among the informed horses, those lower in social ranking were generally followed less often than higher-ranking individuals. Most of these lower-ranking informed horses were seen arriving at the feeding site alone.

Behavior and Influence of Informed Horses

• Informed horses that were not followed spent less time in active walk and used direct paths to food sources less frequently. They were also joined by fewer partners at the food source and spent more time feeding alone.
• These patterns suggest a mixed influence of informed horses on the group’s behavior. Some horses shared their knowledge of food sources and led others to the food, providing a nutritional benefit. Conversely, other horses’ behavior might be functionally deceptive, possibly because they wanted to avoid competition for resources.