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21 Responses to Suggestions for new topics

  1. Philip Round says:

    I would suggest there should be some serious discussion concerning the status of Garganey (Anas querquedula) in this forum. The East Asian Flyway population has crashed to a level which suggests it is now Critically Endangered. This assessment is based on my experience in Thailand, where the numbers wintering have declined by around 90 percent in the past 30 years. The site that held the largest numbers wintering (Bung Boraphet, Nakhon Sawan Province) supported roughly 50,000 Gargeneys in the early 1980s. The numbers wintering at the site now (post 2005) are 5,000 or fewer. Additionally, in the 1980s there were several additional sites where 1,000-10,000 Garganeys could reliably be found wintering. These days, you would be lucky to find a concentration of > 100 Garganeys anywhere in the country apart from Bung Boraphet. This decline in Garganey numbers seems not to have been recognised elsewhere in the E Asian Flyway because there are few observers in countries in the main SE Asian wintering range of the species with a comparable historical perspective. One observer who did possess that perspective, the late Tim Fisher, also commented to me that his experiences of the decline in Garganey numbers in Philippines paralleled my own here in Thailand. I have mentioned my perceptions of this decline both in correspondence and in discussion at international meetings, but have yet to see any reflection of this concern in BirdLife, presumably because the scale of the decline in other, better monitored flyways has been so much less. But when one of 3 or 4 global flyway populations goes critical YOU BETTER WATCH OUT!

  2. Praveen J says:

    Nicobar Scops Owl Otus alius Data Deficient => Near-threatened

    With several photographs and observations pouring out of Great Nicobar on Nicobar Scops Owl, would it be wise to revise the redlist status of this species ?

    By geography, it would fit the four other Nicobar endemics that are present in good numbers

    Great Nicobar Serpent-eagle Spilornis klossi (NT)
    Nicobar Bulbul Hypsipetes nicobariensis (NT)
    Nicobar Parakeet Psittacula caniceps (NT)
    Nicobar Pigeon Caloenas nicobarica (NT)

    The ease with which several birders have obtained this species since 2014 would warrant the same listing (Near-threatened) for the species ?

  3. Praveen J says:

    Large-billed Reed Warbler Acrocephalus orinus

    Would the new information which has been published from Tajikistan-Afghanistan indicated new breeding colonies.
    Coupled with the wintering records from Thailand & Bangladesh, dont we have enough information to reassess its status ?
    I do not have a recommendation, but I believe that we have added quite a lot of information in the last several years on this species that makes it less of a ‘Data Deficient’ bird.

  4. J. W. Duckworth says:

    Coral-billed Ground Cuckoo /Carpococcyx renauldi/ currently LC but in a dreadful way in Lao PDR and Viet Nam – seems to be very sensitive to industrial snaring. Depending on what proportion of the population is in Thailand, may well warrant EN

  5. Ben Phalan says:

    Black-headed Rufous Warbler (Bathmocercus cerviniventris)

    Currently NT. Far more restricted and rare than its distribution map suggests. To give an indication of how few records there are, GBIF has 9 in W. Africa (excluding records of B. rufus listed as this species), while Sierra Leone Prinia (EN) has 11. Western Wattled Cuckoo-Shrike, a more cryptic canopy species whose song is unknown, has 36.

    There are no modern records from Ghana. Climate projections (BirdLife species page) suggest it could lose the core of its already small range. In Ivory Coast there are few recent records away from Nimba, all in the west of the country. One of the IBAs in which it was known, Marahoue, was largely destroyed by settlement following conflict (per Lincoln Fishpool).

    In Liberia, most of the known territories will be lost to mountain-top removal mining at Mt Tokadeh and Mt Gangra in West Nimba, and it is poorly (or not at all) represented in protected areas (Dowsett-Lemaire & Phalan 2013). On an expedition to Grand Gedeh County in 2013 we searched in apparently suitable habitat along streams within the range mapped by Gatter (1997), using playback, and found none (Phalan et al. 2013).

    Although information is limited, it suggests that this species may merit being listed as Vulnerable under criteria B2(a,b) and C1.

  6. Hugo Rainey says:

    Shelley’s Eagle Owl – it could trigger Criteria A or C.

  7. Simon Mahood says:

    Pale-throated Wren-babbler

    Reasoning detailed in my two recent comments to the now defunct “Re-assessment of Species against Criterion B1: Red List Implications of the use of Minimum Convex Polygons” topic.

  8. Péter Villányi says:

    Moustached warbler

    Dear Colleagues!
    I am writing in the name of Kiskunsag Society of Protection of Birds (KME)\Hungary.
    Our Society had started to run a standrad bird banding camp in 1999, at Lake-Kolon,Hungary. We are working with a 1.600 meter long mistnet line crossing the lake. We mark between 10.000 to 15.000 individuals of birds yearly. After starting the work back in 1999 we have realized that the Moustached warbler breeds in the area in high numbers. Between 1999 and 2017 we have ringed 26.000 individuals, and we have registered 15.000 recaptures of the species. After investigating the historical data bases, we have started to work with the research of wintering and migrating habits of the species. The project has been running on since 2002 and it is still happening every year. The aim of the research is to discover the migrating and wintering places of the species at the Mediterranean and the Balkans. We have visited 5 countries in 12 different spots within 35 expeditions. During the expeditions we have ringed 7450 Moustached warblers and we have registered 210 recaptures from the Carpathian Basin.
    Our standrad research in the last 19 years clearly shows that the population of the Moustached warbler is decreasing significantly.
    Our oppinion is that the current situation of the species requires at least a VULNERABLE (VU) status for the Moustached warbler instead of LEAST CONCERN (LC).
    With all respect,
    Péter Villányi

  9. Chris Sharpe says:

    I have mentioned Venezuela’s Arco Minero del Orinoco (Venezuelan Mining Arc) before on BirdLife forums. The project covers 112,000 sq. km (about the size of Cuba, 1.5 x Panama) superimposed on legally designated protected areas and indigenous territories in the world’s largest tropical wilderness, which is an important centre of endemism and a biodiversity hotspot. The Arco Minero is a real game-changer, threatening vast swathes of previously secure Guiana Shield ecosystems with significantly increased deforestation, fragmentation and pollution. Key areas such as the Sierra de Imataca and Cuyuní Basin are already seriously affected. Since the Venezuelan Guayana region has long been presumed to be secure, this will have important consequences – yet to be quantified – on the conservation status of several Neotropical birds. Once detailed analyses are available, this relatively new threat could logically be treated in the same way that BirdLife handled Brazilian infrastructure projections a few years ago (Bird et al. 2011 following Soares-Filho et al. 2006). This will require mapping and modelling work which has not (yet) been carried out. 1/2

  10. Chris Sharpe says:

    2/2. However, even with a cursory look only at non-passerines of the families most likely to suffer the combined impact of deforestation and direct harvest, I can see two species that look likely candidates for imminent category change:-

    Neomorphus rufipennis (Rufous-winged Ground-cuckoo)
    Forest obligate, shuns human disturbance. >40% of current distribution affected by AMO, including core range – suggests LC > NT A3c + 4c

    Amazona (festiva) bodini ([Northern] Festive Amazon)
    Riparian forest obligate, documented target of trapping, population already much reduced. Up to 50% of current distribution affected by AMO – suggests NT > VU A3cd + 4cd

    Sample background press coverage of the AMO here:-

  11. Giant Weaver (Ploceus grandis): LC => NT A4b,c,e; B1a,b(iii,v); B2a,b(iii,v); C1

    The weaver is as the Vulnerable Giant Sunbird (Dreptes thomensis) and São Tomé Short-tail (Amaurocichla bocagii) (Table S3). However, unlike most endemics, it is less reliant on forest (Fig. 1.4 & 1.6), which arguably might make it even more susceptible to direct human pressure and to habitat changes. I suggest that this species becomes Near Threatened instead of Least Concern, since a decline in the population and/or distribution is likely to qualify it as Vulnerable (criteria A4b,c,e; B2a,b(iii,v); C1), or even Endangered (B1a,b(iii,v)).

  12. São Tomé Thrush (Turdus olivaceofuscus): NT B1ab(ii,iii,v); C2a(ii) => LC

    Despite being more reliant on forest habitats (Fig. 1.4 & 1.6), which might be seen as a susceptibility to threat, the thrush is more frequent than the Least Concern São Tomé Paradise-flycatcher (Terpsiphone atrochalybeia – Table S3). Since these single-island endemics occur throughout the island, are fairly frequent and seem to have stable populations, I suggest that both become Least Concern. However, they should be uplisted to Near Threatened as soon as a decline in the population and/or distribution is suspected (A4b,c,e; B1a,b(iii,v); B2a,b(iii,v)).

  13. São Tomé White-eye (Zosterops feae): VU D1 => NT A4b,c,e; B1a,b(iii,v); B2a,b(iii,v); C1

    The white-eye occurs across the island, preferring habitats with intermediate human disturbance (Fig. 1.4 & 1.6). It is also fairly frequent, having been detected more often than the Least Concern (here proposed Near Threatened) Giant Weaver (Table S3), and often being found in large groups (e.g. over 10 or even 20 individuals, pers. obs.). I propose that this species is downlisted from Vulnerable, as it is unlikely that it qualifies for that category under the assumption that it has less than 1,000 mature individuals (D1). Instead it should be classified as Near Threatened, since a decline in the population and/or distribution is likely to qualify it as Vulnerable (criteria A4b,c,e; B2a,b(iii,v); C1), or even Endangered (B1a,b(iii,v)).

  14. Príncipe White-eye (Zosterops ficedulinus): VU D1 => EN B1ab(iii,v)

    The white-eye is scarce (detected only in 10 out of 177 point counts, less than the Critically Endangered Príncipe Thrush, Turdus xanthorhynchus), and heavily reliant on native forest (Fig. 3 & 4), even though it can also be found in more disturbed ecosystems ( Nevertheless, being a small canopy-dwelling species, it might more frequent than what existing records suggests, and also more numerous, since it can occur in flocks of 10+ individuals (Martim Melo pers. comm, pers. obs.). I suggest that this species becomes Endangered, since it is restricted to the 136 sqkm Príncipe Island, and it is likely that the AOO, habitat quality and number of mature individuals are declining (B1a,b(iii,v)), considering recent economic developments and fast-increasing human population.

  15. Príncipe Speirops (Zosterops leucophaeus): NT B1ab(ii,iii,v);C2a(ii);D2 => LC

    The speirops is fairly reliant on native and secondary forests, but it is also abundant on plantations (Fig. 3 & 4). Furthermore, it is nearly as frequent and as abundant as all Least Concern single-island endemics, namely Dohrn’s Warbler (Sylvia dohrni), the Príncipe Golden Weaver (Ploceus princeps) and the Príncipe Sunbird (Anabathmis hartlaubii). Since all of these occur throughout the island, are fairly frequent and seem to have stable populations, I suggest that the speirops also becomes Least Concern. However, in case a decline in the population and/or distribution of any of these species is suspected, it should be uplisted to Near Threatened (A4b,c,e; B1a,b(iii,v); B2a,b(iii,v)).

  16. Dwarf Ibis (Bostrychia bocagei): CR C2a(ii) => CR B1ab(iii,v)

    “The ibis is currently classified as ‘Critically Endangered’ due to having a declining population, fewer than 250 mature individuals and being confined to a single location (criterion C2a(ii); IUCN 2001, 2013). The species is restricted to less than 100 km2 during the breeding season and to a single location, with an inferred continuing decline in the area, extent and quality of its habitat, and in the number of mature individuals, so it should retain its status, under different criteria (B1a,b(iii,v)), even if its population is larger than previously assumed.”
    Additionally, the ibis is also under significant hunting pressure, unlike the other two Critically Endangered species.
    Further support:ção_MBC_Versão_Final_Oficial.pdf

  17. São Tomé Grosbeak (Crithagra concolor): CR B1ab(iii,v);C2a(ii) => EN B1ab(iii,v)
    Newton’s Fiscal (Lanius newtoni): CR C2a(ii) => EN B1ab(iii,v)

    “The fiscal and the grosbeak are both currently classified as Critically Endangered due to having extremely small population sizes, with fewer than 50 mature individuals (criterion D; IUCN 2001, 2013 ). Our observations, together with those of other authors (Solé et al. 2012, Ndang’ang’a et al. 2014, Lewis 2015), suggest that their population sizes may be higher. If this proves to be the case, the category of ‘Endangered’ will perhaps be more appropriate, due to their extents of occurrence being smaller than 5,000 km2 and restricted to a single location, with an inferred continuing decline in the number of mature individuals and in the area, extent and quality of their habitats (criterion B1a,b(iii,v)).”
    Further support:

  18. Simon Mahood says:

    Golden-winged Laughingthrush Trochalopteron ngoclinhense

    Currently VU under criterion D2. However as this indicates it has an EOO of 590km2 (of which it occupies far less) and is declining. Aside from the single record from Mt. Ngoc Bok at c. 1500m elevation, all other records are from higher elevations (see xeno-canto for additional records). The bulk of the population must be in Ngoc Linh NP, which although nominally protected is being actively cleared, particularly at “lower” elevations (there is now no forest below 1,500m, so all clearance is within the species elevational range), for ginger, ginseng, and seemingly just to create short-term grazing for buffalo (pers obs). A higher threat category may be warranted, it must be at least as scarce as the closely related Collared Laughingthrush (EN).

  19. New species of chachalaca (Ortalis remota): CRITICALLY ENDANGERED (CR) A1(a)(c)(e)+B1a+C1 ver 3.1
    Study recognizes that a newly recognized population of O. g. remota differs consistently from all other Ortalis in plumage and geographic distribution. Therefore, it is now considered as a valid species – Ortalis remota. O. remota has a very restricted range on the upper Paraná River basin and is threatened by deforestation and construction of dams.

    So far there is only the knowledge of a little more than 50 individuals, most found in the basin of the turbid.

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