Tree covered in "webs" and caterpillars

Tree covered in

Observation - Tree covered in "webs" and caterpillars - UK and Ireland. Description: This tree is almost entirely covered in webs/silk and on a closer look there were a lot of caterpillars crawling on it (zoom in on close-up photo for a better view of the caterpillars).

This tree is almost entirely covered in webs/silk and on a closer look there were a lot of caterpillars crawling on it (zoom in on close-up photo for a better view of the caterpillars).