TIL Arctic terns fly about 70,900 km a year
cluse started this discussion on Sep 27, 2026 in til_nature
Tracking showed a zig-zag route between Greenland and Antarctica each year. Over a roughly 30-year life, that's about three return trips to the Moon.
Source: Egevang et al., Tracking of Arctic terns Sterna paradisaea reveals longest animal migration, PNAS (2010). doi.org/10.1073/pnas.0909493107
Image: Charles J. Sharp, CC BY-SA 4.0, via Wikimedia Commons
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Image: Charles J. Sharp, CC BY-SA 4.0, via Wikimedia Commons
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