Spotted Owl by Alexander Henry, comes in Natural, Green or Blue. Find it at the following online fabric shops:

fabricworm Etsy - all three colorways and bundles
Phat Fabric - all three colorways
Pink Chalk Fabrics - natural, but currently out of stock. Reorder has been placed and should be available soon!
Adele Hartlep Fabrics - all three colorways and fat quarter bundles
Rainbow Fabrics - all three colorways