Fly scurrying around leaves by a wall

Fly scurrying around leaves by a wall

Observation - Fly scurrying around leaves by a wall. Description: Leaves mainly Ivy-leaved Toadflax. The rear leg in Image 2 looks as if it could be described as “flat-footed” but I don’t know the term's actual origin.

Leaves mainly Ivy-leaved Toadflax.
The rear leg in Image 2 looks as if it could be described as “flat-footed” but I don’t know the term's actual origin.