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I observed this slighly odd behaviour of caterpillars in the Parque del Retiro in Madrid. One group had formed a circular bundle, the other formed a long line running across the path and several metres across the grass. We wondered if the circular group had followed one which was lost.


shebebusynow 8 years ago

These almost look like tent caterpillars, which do gather together.

Great spotting! It is an odd behavior.

Spotted by

Madrid, Madrid, Spain

Spotted on Feb 27, 2012
Submitted on Aug 26, 2012

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