The Sequoia

Mariposa Grove was an hour's drive south of the valley. Ranger Tomas had gone off-duty at midday, but he had dropped Polly at the trailhead with a quiet "go see the old ones."

The old ones were giant sequoias. The biggest trees in the world by volume, though not the tallest. Polly had read about them. She had not understood them. You did not, she found, until you stood at the base of one.

The first thing she noticed was the colour. Sequoia bark was not brown. It was a deep, fibrous, almost rust-orange. Up close it looked spongy. She landed on a low branch of a younger tree, perhaps four hundred years old, and pecked the bark experimentally. It gave a little under her beak. The bark was nearly half a metre thick, soft to the touch, full of tannin. It was the tree's main defence against the forest's most regular enemy: fire.

A family walked past on the trail. A small girl said, loudly, "Polly is that a parrot?" Her father said, "It's a stuffed animal someone forgot." Polly did not move. The family walked on.

She flew up the side of the tree, level by level, the way she would climb a building. At about thirty metres up, the branches began. They came out almost horizontally, thick as her own torso, and they continued out from the trunk for ten metres before they tapered. She perched on one and looked up. The crown was still another forty metres above her.

The trail looped through the grove and ended at one tree in particular. The Grizzly Giant. About 2,995 years old as best as anyone could tell. The largest sequoia in this grove and one of the largest in the world. Polly flew to it.

Its trunk at the base was wider than a city bus. The lowest branch alone was the size of a fully grown oak. Polly perched on a low burl in the bark. From there she looked up. Up. Up.

Three thousand years. The tree had been here when Egyptian pharaohs were building the Valley of the Kings. It had been here when Rome was a small farming village. It had been here when the Bronze Age was ending. It had grown roughly one centimetre of trunk radius per year, on average, in steady silence.

She stayed a long time. A small fire scar on one side of the trunk was older than most countries. The tree had survived dozens of fires in its life, each one leaving its mark and then being healed over by new growth. The bark closed around the burns the way human skin closes around old cuts.

A seed about the size of an oat flake fell past her in the still air. She watched it go. Sequoia seeds need fire to germinate. The cones only open in the heat. Every generation of these trees is the result of an old burn.

The sun moved an inch. She still had not moved. The Grizzly Giant had still not noticed her. She liked that.