How can I spot processionary caterpillar nests while hiking in Mallorca's Tramuntana mountains?

Hiking near Valldemossa or through the Serra de Tramuntana offers a good chance to glimpse processionary caterpillar nests, especially in late winter and early spring. These nests often cling to the pine trees that dot the mountain slopes and appear as dense, white, silky masses tucked into the fork of branches or at twig ends. Their silvery-grey strands stand out against the dark pine bark if you look closely.

If you walk along the Ma-10 winding through the Tramuntana, watch for trees showing bare patches or wilted needles where caterpillars have fed. The caterpillars get their name from their unique habit of moving in head-to-tail lines, often seen during mild weather, which can lead you to their nests. Be mindful though: the tiny hairs on the caterpillars can irritate skin and eyes, so admire from a distance.

Different species may build slightly varied nests, but on this island, the pine processionary is the most common. While you explore forested trails near Deia or Soller, take your time to observe without disturbing these little creatures. Staying on marked paths and respecting the natural habitat ensures you enjoy the experience safely and without harm to the wildlife around you.