Migration pit stop

Migration pit stop

Migratory lemon emigrants (Catopsilia pomona) “puddling” in Yala National Park, Sri Lanka. Puddling, in which butterflies sip water from damp or muddy soil, provides salts and other minerals that the insects cannot obtain from nectar alone.
© Nandana Rathnayaka/Shutterstock.com
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  • Encyclopædia Britannica, Inc.
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  • Encyclopædia Britannica, Inc.
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