Goose and windmill
A goose stands guard over smaller ducks at Bear Creek Park in Keller before the Run In The Dark 5K on Saturday, August 23, 2003.
Mark M. Hancock / © The Dallas Morning News
I started to use this image to show skeletal structure, but the other image was a far better example. However, notice how the goose's head separates from the sky while following the curve of the treeline. Likewise, it's chest contrasts with the shaded trees. Meanwhile, the ducklings blend into the grass when the viewer squints at the image and reduces the color saturation.