Overview

• A study on Lundy Island tracked sparrows' social behaviors from 2000, revealing a decline in social contacts as they age.
• Older sparrows not only lose connections with peers but also form fewer new social bonds.
• The research suggests that young sparrows benefit evolutionarily from friendliness, impacting their reproductive success.
• The findings draw parallels between sparrows and humans, highlighting similar social patterns in aging.
• Sparrow populations are widespread globally, yet their numbers have been declining significantly in recent decades.