Science

Wild birds rewrite rules of flight efficiency: Study reveals power of 'free fuel' from the sky

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Based on a feed excerpt; full article content has not been acquired. Source evidence retrieved 15/10/2026, 18:10:24 UTC.

Briefings

A 2026 study challenges the traditional belief that flying is more energy-intensive than swimming by demonstrating that birds can sometimes achieve greater efficiency in flight than in water. The research suggests that 'free fuel' from the sky allows for lower energy costs compared to aquatic travel, overturning established textbook views of animal locomotion. This finding implies that flight may be a more energy-efficient mode of movement for certain species under specific conditions. The study highlights a fundamental shift in understanding avian energetics and suggests that the energy cost of flight is not universally higher than that of swimming.

Key points

• A 2026 study overturned the textbook view that flying is more energy-intensive than swimming, revealing that birds can sometimes achieve greater efficiency in flight than in water.
• The research indicates that 'free fuel' from the sky allows for lower energy costs compared to aquatic travel, challenging the assumption that flight is always more energetically demanding.

Context and limitations

The study's findings are based on a single international research publication from October 2026, with specific data points and energy calculations limited to the scope of that single source.

Generated by Bittrees-hosted qwen35-2b sha256:aaf42c8b7c3c on 15/10/2026, 18:11:52 UTC. Based on publisher-provided feed evidence; may not cover the full original article. Check the source for details.

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