Family Pigeons, Doves (Columbidae)

Least Concern

Ryukyu Green-pigeon (Treron permagnus)


Taxonomy

French: Colombar des Ryukyu German: Riukiu-Grüntaube Spanish: Vinago de Ryukyu
Taxonomy:

Treron permagna

Stejneger

, 1887,

Napa, Okinawa, Ryukyu Islands

.

In the past, sometimes placed in genus Sphenurus. Closely allied to T. sphenurus and T. sieboldii, and more distantly to T. oxyurus species-group. Hitherto considered conspecific with T. formosae, but recently recognized as a full species (and erroneously listed under the name riukiuensis)#R; split reaffirmed here on account of undifferentiated (continuous) green vs dull orange crown of male (3), dull reddish-brown vs bold reddish-purple carpal patch of male (2), and longer tail (effect size 4.01) (2). Two subspecies recognized.

Subspecies and Distribution
  • T. p. permagnus Stejneger, 1887 – N Ryukyu Is (Tanegashima, Amami-Oshima, Tokunoshima, Okinoerabu, Okinawa).
  • T. p. medioximus (Bangs, 1901) – S Ryukyu Is (Ishigaki, Iriomote, Kuro, Taketomi, Hatoma, Yonaguni and perhaps Miyako).
  • Descriptive notes

    33–35 cm. Large, uniform, heavy-bodied Treron with distinctive undertail pattern; adult has deep green head, upperparts and underparts, with deep brownish-maroon... read more

    Voice

    Apparently similar to T. formosae; the advertising call is a long, mournful, fluty note... read more

    Habitat

    Subtropical broad-leaved evergreen woodland, trees around cultivation and even gardens in towns; to... read more

    Food and feeding

    Frugivorous, but few specific data, other than takes tree fruits, small figs and rarely seeds; usually feeds in or just below forest canopy.

    Breeding

    In Ryukyu Is breeds from Apr onwards, with territorial calling commencing in mid Feb and nests found from early May; males on Okinawa have... read more

    Movements

    Largely resident, but has apparently wandered to Taiwan in winter, as well as to SW Kyushu (... read more

    Status and conservation

    Not globally threatened (Least Concern). A common species whose global population has been estimated at 10,000–100,000 pairs. Population thought to be stable overall,... read more

    Recommended citation

    del Hoyo, J., Collar, N., Kirwan, G.M. & Garcia, E.F.J. (2018). Ryukyu Green-pigeon (Treron permagnus). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/467156 on 18 October 2018).