
One of the reasons I like working larger is that I get to play with the details. Smaller images sometimes only need a line of stitching to define things. Larger images allow me to play with color and texture. And the space to make the details count.
There are a couple of defining factors. Are the legs and feet segmented? A solid line of black stitching defines that.

These feet were stitched with progressive colors in garnet stitch, small circles intertwined together.

Does the stitching flow into itself? These have simpler feet and legs with segments.

Does it have patterned stitching? These were stitched in u-shaped scales.

Garnet stitch textures these feet with quieter tones.

Of course, the angle of the legs creates the movement of the bird.
And you can cheat by putting the feet in water.

Different textures, different treatments make the kind of details that define the piece.