Here, at the edge of the great migratory channel, two members of the species have paused where the herd thins. They have travelled far to reach this threshold, dragging behind them wheeled shells that carry, we can only assume, all that they will need in the season ahead. And now, at the boundary line beyond which only one may pass, the ritual begins.
Watch closely. The larger of the pair reaches out and encircles the smaller in both forelimbs, drawing it close in the ancient embrace, a gesture we observe across so many warm-blooded creatures at the moment of parting. They hold. They do not speak. The overhead voice, the tireless herald of this ecosystem, calls out numbers and gates into the vast fluorescent canopy, and still they hold, oblivious, as though the entire terminal has narrowed to the warmth of one another's shoulders.
Now, the release. Note how the smaller specimen lifts a paw, not in aggression, but in that peculiar salute the species reserves for distance it cannot yet cross. It turns toward the channel. It walks. And here, the detail that never fails to move me: it stops. It turns back. One more look, across the widening gap, at the one who cannot follow.
The larger creature remains rooted long after its companion has vanished into the current of moving bodies, watching the empty place where the other stood, reluctant, somehow, to accept that the herd has swallowed it whole.
Then it gathers its shell and moves off alone.
For this is the enduring truth of the species: they will cross any ocean to be together, and endure any silence to let each other go.