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Loggers Reveal 6,000 Dives, Deeper Travel, Feeding Risk

7/17/2026

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Summary

Story summary

Scientists fitted 23 Adélie penguins with 1.6 %-body-weight loggers that recorded depth, motion, GPS and feeding strikes.
The loggers recorded 30 trips and more than 6,000 dives averaging 61 feet, some as far as 2.6 miles from the colony.
Repeated use of one sea-ice opening made penguins dive deeper and travel farther while krill capture stayed constant.
Deeper, longer dives required extra time and energy, potentially reducing chick feeding.

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Story summary

Scientists fitted 23 Adélie penguins with 1.6 %-body-weight loggers that recorded depth, motion, GPS and feeding strikes.
The loggers recorded 30 trips and more than 6,000 dives averaging 61 feet, some as far as 2.6 miles from the colony.
Repeated use of one sea-ice opening made penguins dive deeper and travel farther while krill capture stayed constant.
Deeper, longer dives required extra time and energy, potentially reducing chick feeding.