Small mounds of upturn soil

[momo2007]

Hi,
Noticed the last couple of weeks our lawn peppered with small mounds of soil. Initially thought it was just decomposing leaves but I m not sure now. Any ideas what it might be? Worms?

https://freeimage.host/i/39Qoue9


https://freeimage.host/i/39QoAbe

 

[momo2007]

our culprit ... he moves them to new secret locations most days, and has built us a mini golf course

Yeah, this morning my daughter saw one digging up the bare ground around the tree in our garden

 

[momo2007]

But have caught one in the act digging up the lawn