Streaked Laughing Thrush displaying strange behaviour

Is this Streaked Laughing Thrush over-heating as a result of stress, or is it displaying? Yet again, could it be injured or thirsty?

The Streaked Laughing Thrush (Trochalopteron lineatum) is a species of bird in the Leiothrichidae family. It is commonly found in the northern regions of the Indian Subcontinent and some adjoining areas, ranging across Afghanistan, Bhutan, India, Nepal, Pakistan, Russia, and Tajikistan. The subspecies imbricatum is usually considered a separates species, Bhutan Laughing Thrush.

Source: Wikipedia

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