"Eastern" Water Rail - a.k.a. "Brown-eared" Rail (Rallus indicus) is a winter visitor to Hong Kong.
It's been getting pretty close to freezing in the past few days, so viewing a few winter birds has seemed appropriate.
Long Valley has boasted some good birds in recent weeks, and during holidays there are always birders and photographers about. Small huddles of well-wrapped-up people have been dotting the network of small freshwater fields.
Both rail and crake were in the corner, above.