Black Wood Pigeon

Overview

The black wood pigeon, or Japanese wood pigeon (Columba janthina), is the largest East Asian representative of the genus Columba and is currently classified as Least Concern on the IUCN Red List. This species is largely restricted to the offshore islands of the Pacific around Japan, Korea, China, and Taiwan, where it inhabits temperate and subtropical forests. Although it has recently colonised Zhejiang on the mainland, the population is generally in decline due to habitat loss, deforestation, and hunting.

Identification

• A robust bird with soot-black plumage exhibiting iridescent green or purple sheens on the crown, shoulders, and sides of the neck.
• Features a small head, longish neck, and a long, narrow, dark greenish-blue bill with an ivory to pale yellow tip.
• Legs and tarsi are red, though they appear paler in juveniles; the body size ranges from 37–43.5 cm in length.
• In flight, it displays large wings and a slightly fanned tail, while sexes are similar in appearance with no sexual dimorphism.

Habitat

Endemic to island laurel forest environments, the black wood pigeon resides in temperate forests and subtropical or tropical moist lowland forests. Its distribution is concentrated on small islands in the East China Sea, such as the Ryukyu, Ogasawara, and Iwo Islands, as well as along the southern coasts of Korea and Japan. It shows a strong association with mature forests, particularly those featuring Machilus thunbergii and Camellia japonica.

Diet

Although considered omnivorous, the bird has a strong preference for vegetable matter, including leaves, flowers, drupes, berries, acorns, and conifer seeds. It collects food directly from trees, with a preference for those near ponds and rivers, and specifically targets species like Ilex rotunda, Ilex integra, and Camellia japonica. The diet shifts seasonally based on fruit availability, incorporating nitrogen-rich foliage and leaves from Prunus and Asteraceae when fruit is scarce.

Did you know?

The black wood pigeon is the only bird capable of eating the largest native fruits and drupes from certain trees, making it a vital agent for seed dispersal within its ecosystem. It has also been a protected natural monument in South Korea since 1968, with specific breeding sites designated for conservation.