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Post by sebbe67 on Apr 25, 2006 19:45:46 GMT
 Here is a map which shows were there are known records of the Pink-headed duck, altough the Myanmar distribution isnt included. |
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kk1
Full Member
Posts: 63
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Post by kk1 on May 1, 2006 3:06:57 GMT
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Post by Melanie on Jun 15, 2006 14:17:14 GMT
Netta or Rhodonessa? You can read in the Wikipedia that the new valid name of this species is Netta caryophyllacea because of its relationship to Netta rufina. My question is now: Which authority put this species into the genus Netta? Because both Sibley & Monroe and ITIS (the main authorities in Bird taxonomic questions) still regarded it as Rhodonessa.
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Deleted
Deleted Member
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Post by Deleted on Jun 15, 2006 14:25:20 GMT
Hi !
I think this is an error.
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Post by dysmorodrepanis on Jun 18, 2006 12:54:18 GMT
Molecular evidence -> Netta
Morphological evidence -> Rhodonessa
Basically a highly derived relative of Netta. What genus it belongs to is not settled I'd say. Currently, the Netta classification seems to be favored, but this may change. I shall expand the WP article when I get the references sorted out.
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Post by dysmorodrepanis on Jun 18, 2006 13:34:24 GMT
Funny thing is, the placement in Netta is mased on morphological analyses also. there seem to have been no molecular analyses on this bird to date (as they would require ancient DNA techniques)
I have corrected the Wikipedia article and added sources etc.
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Post by Melanie on Jun 18, 2006 20:31:56 GMT
Thanks for the correction, Dysmorodrepanis. I was really wonder to read this in the Wikipedia without any source. I have some books from the past 10 years about the Pink-headed duck but in no book i have read something like that.
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Post by Peter on Aug 6, 2006 16:01:27 GMT
Pink-headed blank18-07-2006 A fourth joint BirdLife/Biodiversity and Nature Conservation Association (BANCA - BirdLife in Myanmar) survey in Kachin State, northern Myanmar, has failed to find evidence of the continuing existence of the Pink-headed Duck Rhodonessa caryophyllacea. "We followed up local reports, but all proved to be White-winged Ducks," said expedition leader Jonathan Eames of BirdLife in Indochina. "If the Pink-headed Duck was resident in Kachin, we surely would have found it by now. Perhaps it is indeed extinct or is only a visitor to the region." The team used elephants and boats to search the floodplain grasslands and ox-bow lakes along the Nat Kaung River, north of Kamaing and south of Shadusup. Although no Pink-headed Ducks were found, several globally threatened species were recorded, including Green Peafowl Pavo muticus, White-winged Duck Cairina scutulata, Masked Finfoot Heliopais personata, White-rumped Vulture Gyps bengalensis, Slender-billed Vulture Gyps teniurostris, White-bellied Heron Ardea insignis and Lesser Adjutant Leptoptilos javanicus. Large areas of apparently suitable habitat have now been surveyed in Kachin State, through a project funded by the UK government’s Darwin Initiative. Undaunted, the team hope to survey areas further south in Myanmar where Pink-headed Ducks were historically recorded. Source: www.birdlife.org/news/news/2006/07/phd.html.
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Post by another specialist on Feb 6, 2007 18:08:13 GMT
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Post by sebbe67 on Mar 5, 2007 22:42:24 GMT
Fifth search fruitless but rewarding?
The latest search was undertaken by a
BirdLife/BANCA team from the 30 November
to 12 December 2006. This time the team
returned to Nawng Kwin and surveyed the
grasslands and oxbow lakes along the
Indawgyi River. Although hampered by the
early morning fog so typical of lowland areas
of Kachin State during the winter, the team
again conducted grassland searches from
elephant-back. At one of the sites a local
fisherman provided the best report yet
suggesting that the species still exists. Villager
Maung Maung reported that the species was
shy and seldom flew from the grassland pools
where he had seen it as recently as a month
before the teams’ visit. He went on to say that
he never saw the species on the nearby river
and that it never associated with other species
of duck.
“These are the most convincing reports we
have ever had,” said Jonathan C. Eames,
Programme Manager for BirdLife International
in Indochina, who added, “the habitat at this site remains extensive, however we will need a bigger search-effort if we
are to comprehensively survey this area. If we can’t find the species at this site, which is the last great un-surveyed
grassland in Kachin State, I doubt it’s continued existence there. We have found all the large waterbird species
associated with these wetlands. Many of these are rare elsewhere within their ranges but in Kachin State they remain
common. If the Pink-headed Duck is here why can’t we find it?” The team plans a follow-up survey later in 2007.
Source: Birdlife Indochina
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Post by another specialist on Jul 24, 2007 19:53:08 GMT
vadori's & Ringed Teal, Pink-headed, Pink-eared & Blue Ducks with Color Plate & Matching Species Key Salvadori's Teal, Ringed Teal, Pink-headed Duck, Pink-eared Duck & Mountain Blue Duck  Species Key;  mawba.com/ringed.htm  |
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Post by Melanie on Sept 6, 2007 20:01:00 GMT
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Post by another specialist on Jan 1, 2008 20:10:09 GMT
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Post by sebbe67 on Apr 18, 2008 18:55:27 GMT
Latest search fails to find the Pink-headed DuckIn January 2008, and for the fifth consecutive year, a BirdLife/Biodiversity and Nature Conservation Association team conducted a search for the Critically Endangered and possibly extinct Pink-headed Duck Rhodonessa caryophyllacea in the lowlands of northern Kachin State, Myanmar. For the fifth consecutive year they failed to find the species or any convincing evidence of its existence there. This year the search concentrated on three previously surveyed locations from where the species had been claimed or reported in the recent past. For the third time a team visited the grasslands at Nawng Kwin, where some members of the 2004 team believed they had seen a Pink-headed Duck on 1 December 2004. Despite the higher water levels than in previous visits in 2004 and 2006 and the presence of flocks of Spot-billed Duck Anas poecilorhyncha haringtoni and Eurasian Teal Anas crecca there were no antalizing glimpses of any unidentified ducks. As in 2006, the team again visited the oxbow lakes along the Indaw River north of Chaung Wa vi l lage. This year the team could not even relocate the mysterious Maung Maung who had claimed to see the species there in 2006. The team did find the active nest of a Dusky Eagle Owl Bubo coromandus, the first record for Kachin State. This was followed by a return to a selection of the larger ox-bow lakes along the Tanai River including Se Hnaung In where local fisherman Win Bo had reported the species in 2003. Again, no sight ings of Pink-headed Duck al though the team did observe a pair of White-winged Ducks Cairina scutulata. The wetland had changed considerably with a screen of trees now blocking a view over the adjacent grasslands. At Lamaung In there was a similar story: A site that had been good for duck and geese in previous years had become overgrown in the absence of domestic Water Buffalo to keep the grass in check. At Hin Kaw In the presence of larger numbers of fisherman than in previous years did not appear to have diminished the importance of the site for birds and on two visits the team recorded two White-winged Ducks, three Masked Finfoots Heliopais personata (clearly proving the residency of the species in northern Myanmar during the northern winter) and a first winter White tailed Eagle Haliaeetus albicilla. Unlike previous surveys, the January 2008 trip was marked by bad weather, including snow in the Hukaung Valley and heavy rainfall, high winds and low daytime temperatures. At least the presence of cloud cover on many days kept the winter fogs at bay. The team met with various misfortunes during the trip including a collision with a bridge support that catapulted the cook (who could luckily swim) out of the boat and into the river, a camp being flat tened due to high winds, a boat that broke its moorings and floated off down river and a mammoth trek back to Mytkyina from Tanai that took nearly 17 hours rather than the usual six as a result of collapsed bridges. To cap it all an aircraft under carriage failure on a re-fueling stop in Mandalay caused further anxiety and delay. This expedition concludes our attempts to search for the Pink-headed Duck in Kachin State. Future BirdLife searches will focus on Mandalay Division, the only part of Myanmar from which specimen records of the Pink-headed Duck were obtained historically. birdlifeindochina.org/report_pdfs/Babbler%2024%20&%2025.%20pdf.pdf
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Post by sebbe67 on Apr 28, 2008 21:40:51 GMT
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Post by another specialist on Apr 29, 2008 7:08:43 GMT
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Post by another specialist on Apr 29, 2008 21:37:10 GMT
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Post by another specialist on May 27, 2008 8:18:04 GMT
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Post by another specialist on Nov 20, 2008 10:33:47 GMT
 Conservation Biology in Theory and Practice By Graeme Caughley, Anne Gunn |
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Post by another specialist on May 3, 2009 19:01:58 GMT
  Encyclopaedia of Birds By Arvind N. Shukla, Rajiv Tyagi |
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