Superb Starling (Lamprotornis superbus) Recent studies reveal their behavior of “reciprocity,” where they assist each other with the expectation of future favors.
Lamprotornis superbus) at Wilhelma Zoo in Stuttgart, Germany. The lighter-colored bird is flanked by two adults. Image credit: Dennis Irrgang / CC by 2.0.” width=”580″ height=”387″ srcset=”https://cdn.sci.news/images/2025/05/image_13887-Lamprotornis-superbus.jpg 580w, https://cdn.sci.news/images/2025/05/image_13887-Lamprotornis-superbus-300×200.jpg 300w, https://cdn.sci.news/images/2025/05/image_13887-Lamprotornis-superbus-84×55.jpg 84w” sizes=”(max-width: 580px) 100vw, 580px”/>
Superb Starling family (Lamprotornis superbus) at Wilhelma Zoo in Stuttgart, Germany. The lighter-colored bird is between two adults. Image credit: Dennis Irrgang / CC by 2.0.
The Superb Starling is a passerine bird belonging to the Sturnidae family.
This species is widespread, inhabiting various regions in East Africa, including Ethiopia, Somalia, Uganda, Kenya, South Sudan, Tanzania, and beyond.
These birds form large mixed groups consisting of 7 to 60 individuals, with an average size ranging from 13 to 41 members.
“The social structure of Starlings is complex, comprising not only family units but also a mix of both related and unrelated individuals, much like humans.”
“It’s well-known that animals tend to assist their relatives to enhance genetic fitness and propagate their genes.”
“While Starlings prioritize helping relatives, they also lend support to unrelated individuals.”
Professor Rubenstein and his team discovered that this support arises through the establishment of mutual relationships.
However, proving that such behaviors are present in non-relatives remains challenging.
The study is rooted in two decades of research by the authors on these birds in Africa, thriving in the harsh savannah climate.
From 2002 to 2021, thousands of interactions among hundreds of birds were documented, alongside DNA samples to analyse genetic links.
By merging behavioral data with genetic information during 40 breeding seasons, they posed pivotal questions: Did birds prioritize aiding relatives? Did they assist non-relatives when related individuals were available? Did they reciprocate support over time?
Ultimately, the findings revealed that while helpers prioritized their relatives, they often supported specific unrelated individuals consistently, even when relatives could assist.
“Many of these birds forge friendships that develop over time,” Professor Rubenstein stated.
“Our next goal is to investigate how these relationships are formed, their longevity, and why some bonds remain strong while others diminish.”
The study was published today in the journal Nature.
____
Advertising et al. The enigmatic role of mutual assistance among birds in cooperative breeding. Nature Published online on May 7, 2025. doi:10.1038/s41586-025-08958-4
Source: www.sci.news
