Burrowing among the boulders?

 Rocks, lichens, mosses...and an owl!  Can you spot it?

 

 

 

There's a Burrowing Owl (Athene cunicularia) just right of center.  If you're having a hard time spotting it, here's a slightly closer view (below).  [And you can click on the image for a larger version.]

 

 

 

Photographed in Petaluma on 31 January 2021.