As best I can determine, Buffy is digging for voles. She chose this area under a live oak to dig long trenches in an area where 'Minnow' daffodil bulbs are in place in front of some gingers, including the green Cardamon ginger visible in the pics. At the end are some other bulbs, none of which surfaced as she dug, hopefully further underground.
Buffy and I discussed the feasibility of my raking this area smooth and scattering a few seeds soon. We also spaded up a little area by the stick house for putting in some sweet pea seeds that should have gone in last month.