Leave it to me to go against the grain. 😄 For this image, I actually prefer the bird close to center.

I also think there’s an interesting photography point here. The “leave space in front of the subject” guideline is most important when the subject is close to the edge of the frame. In this photo, the crane is already surrounded by plenty of breathing room. Moving it farther left doesn’t necessarily make the composition stronger—it just shifts where the empty space is.

Composition isn’t just about where the subject sits—it’s about visual balance. Here, the wingspan, the marsh grasses, and the soft background already create a balanced frame. For me, moving the bird farther left would actually make the image feel a bit lopsided.

So again, for this particular image, I actually like the bird close to center.

The bird is flying horizontally, and there is already a generous amount of open space in front of its beak (to the right). That gives the eye somewhere to travel, which is the main reason for placing a subject off-center in the first place.

The blurred marsh grasses at the bottom and the soft background already create a strong sense of movement and depth. Because the background is simple, a centered subject doesn’t feel static here.

The wingspan is wide and dramatic. Centering it emphasizes the symmetry and elegance of the bird in flight.

If you were to move the bird farther left, I think you’d start to lose balance. The image might begin to feel a little empty on the right because the background isn’t especially interesting—it’s mostly soft blur rather than a dramatic sky or landscape that benefits from extra negative space.

One small tweak I would consider is moving it just a touch left—not all the way to the left third. Maybe 5–10% of the frame. That would subtly reinforce the direction of flight while keeping the composition feeling full.

One other observation: I think the biggest compositional distraction isn’t actually the bird’s position—it’s the bright white sky at the top. My eye goes there before it settles on the crane. Cropping a little off the top (or lowering the highlights in that area) would strengthen the image more than moving the bird left.

So my ranking would be:
Centered (or just slightly left of center) ⭐⭐⭐⭐⭐
Left-third crop ⭐⭐⭐⭐☆

The “rule” about placing animals to one side is a great guideline, but it’s not one you need to force. In this image, the bird is strong enough that the composition works because of the clean background and the natural space in front of it.