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Old Friday 9th September 2011, 16:55   #5
Richard Klim
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Join Date: Feb 2003
Location: Somerset, UK
Posts: 12,792
Red-headed/Ogasawara Wood Pigeon

Quote:
Originally Posted by Mysticete View Post
My understanding was that there were still a very few (<10) Ogasawara Wood-Pigeons around as well
BLI states that it is thought to have gone extinct in the 1980s, citing Baptista et al 1997, which is inconsistent with these posts on kantori:

Yuko Sasaki, 5 Jun 2000:
Quote:
The endemic pigeon still exist.
Japanese Wood Pigeon subspecies Columba janthina nitens [Akagashira Karasubato]'s news was on "Wildbird News". A researcher on bird succesfully took its photo in January 2000, even though nobody took its photo since 1998. Recent estimated number of this species is only ten !!!!!! 10 birds, so pitty.
Richard Carden, 10 May 2005, Ogasawara mini report - GW:
Quote:
NOT SEEN was Japanese Woodpigeon, (Akagashira Karasubato) the Ogasawara sub species is now down to around 20 birds, all pretty loyal to the Sekimon area of HaHaJima. This area is protected and you should not enter without a guide, you cannot enter the area at all from Nov - Mar inclusive. Unfortunately we had a trail of disaster trying to see this bird...
Mark Brazil, 20 Jun 2006, Black/Japanese Woodpigeon:
Quote:
The race of Columba janthina (nitens) endemic resident on Ogasawara/Iwo islands, is often described as extinct, but OSJ (2000) considered it extant. Does anyone know its current (i.e. post 2000) status?
Yoshiki Watabe, 20 Jun 2006:
Quote:
Columba janthina nitens is not extinct, but is treated as a endangered subspecies by Ministry of the Environment(2002).

Ministry of the Environment(2002) described as follows;

"Columa janthina nitens is one of three subspecies of C. janthina, a large wood pigeon endemic to Japan. This subspecies occurs only on the Bonin and the Volcano islands, where it feeds mainly on fruits in mature broad-leaved evergreen forest. The minimum population is estimated to be 30 to 40 birds. The reduction in the area of its forest habitat, coused by browsing by introduced goats, and human-related deforestation, is considered to be the major threat to this subspecies."

Reference:
Ministry of the Environment (ed.) 2002. Threatened Wildlife of Japan - Red Data Book 2nd ed.- Volume 2, Aves. Japan Wildlife Research Center, Tokyo.
[Brazil 2009 accordingly describes it as rare (30-40? birds).]
Nick Lethaby, 20 Jun 2006:
Quote:
It definitely is extant. There were two nests last year on Chichijima. Marcel (a dutch guy) is helping monitoring them. What is presumably this subspecies is also common on the one unspoiled island in the Iwo-jima group.
An image taken by Chikara Otani in Dec 2003: OBI.

Last edited by Richard Klim : Friday 9th September 2011 at 17:35. Reason: OBI
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