During winter, Murin-an’s moss comes apart in several places and the marks where holes are opened in the ground stand out. Torn areas are refilled early in the morning when the garden is cleaned. The culprits behind this moss tearing are wild birds (pale thrushes) that migrate north in spring and cause this condition while they catch worm and scarab beetle larvae. When they return to the continent fully nourished, the task of refilling the moss is finished. But we sure do wish they’d clean up after themselves once they’re done eating.