About Arborophila crudigularis (Swinhoe, 1864)
Arborophila crudigularis, commonly known as the Taiwan partridge, reaches approximately 28 cm (11 in) in total length. Males have an average weight of around 311 g (11.0 oz), while females average around 212 g (7.5 oz). This species has a grey crown, with black sides of the head, and white markings including the eyebrow, chin, and the patch located below the eye. The throat is white, marked with a distinct black half collar. The upperparts are colored olive-grey and patterned with black bars; the rounded, rufous wings hold three grey bars each. The tail is short and rounded, and the underparts are blue-grey, with white streaks present on the flanks. The eye itself is black, surrounded by a narrow red eye ring. The beak is blue-grey, and the feet are orange-red. Females have similar plumage to males, but differ by having fewer streaks on the throat and more streaks on the flanks. This partridge is endemic to Taiwan, where it occurs only in the central and eastern mountain regions of the island. It inhabits broadleaf forests, showing a preference for thickets and undergrowth. It can be found at elevations ranging from 700–3,000 m (2,300–9,800 ft) above sea level, and occurs most commonly between 1,500–2,000 m (4,900–6,600 ft).
