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Five most recent topics
- Cory’s Shearwater (Calonectris diomedea) is being split: request for information on C. diomedea and C. borealis
- The taxonomic treatment of the Little Shearwater (Puffinus assimilis)/Audubon’s Shearwater (P. lherminieri) complex is being revised, and P. bryani is being recognised as a species: request for information
- Aleutian Tern (Sterna aleutica): uplist to Vulnerable or Endangered?
- Ogea Monarch (Mayrornis versicolor): downlist to Near Threatened or Least Concern?
- West Indian Whistling-duck (Dendrocygna arborea): request for information
Category Archives: Seabirds
Cory’s Shearwater (Calonectris diomedea) is being split: request for information on C. diomedea and C. borealis
Cory’s Shearwater Calonectris diomedea is being split into C. diomedea and C. borealis, following the application of criteria set out by Tobias et al. (2010) and consultation of genetic evidence (Gómez-Díaz et al. 2009, Genovart et al. 2013). Continue reading
The taxonomic treatment of the Little Shearwater (Puffinus assimilis)/Audubon’s Shearwater (P. lherminieri) complex is being revised, and P. bryani is being recognised as a species: request for information
BirdLife’s taxonomic treatment of the Little Shearwater Puffinus assimilis/Audubon’s Shearwater P. lherminieri complex is being revised to reflect improved understanding of their taxonomy, and P. bryani (Pyle et al. 2011) is to be recognised as a species. Continue reading
This discussion was first published as part of the 2014 Red List update, but remains open for comment to enable reassessment in 2015. Current species factsheet for Aleutian Tern: http://www.birdlife.org/datazone/speciesfactsheet.php?id=3285 Aleutian Tern Sterna aleutica is currently listed as Least Concern … Continue reading
This discussion was first published as part of the 2013 Red List update, but remains open for comment to enable reassessment in 2015. BirdLife Species Factsheet for White-chinned Petrel White-chinned Petrel Procellaria aequinoctialis is currently classified as Vulnerable under criterion … Continue reading
In Japan, where it is thought that the majority of the species’s world population breeds, there are 11 islands that are inhabited by more than 10,000 breeding pairs of this species, with birds on at least three of these islands having been shown to be negatively impacted by introduced predators (M. Sato in litt. 2011). In addition to the threat from introduced predators, the species is also susceptible to fisheries bycatch (J. Croxall in litt. 2011). The prevalence of these threats suggests that the species is in population decline; however, further data and observations are required from throughout the species’s range to better assess the current trend. Continue reading
It has been argued that there are in fact no credible threats to the largest colony on Macquarie Island (S. Garnett in litt. 2011). Casual observations suggest that the population is increasing. Based on the clarification of the species’s status, it is suggested that it could qualify for downlisting to Least Concern on the basis that it no longer meets or approaches the thresholds for Vulnerable under any of the IUCN criteria. Continue reading
This discussion was first published as part of the 2013 Red List update, but remains open for comment to enable reassessment in 2015. BirdLife species factsheet for Cassin’s Auklet Cassin’s Auklet Ptychoramphus aleuticus ranges from Baja California (Mexico) up the Pacific … Continue reading
To suggest discussion of a species not listed in the forum, send a reply to this discussion. A moderator will assess the suitability of the topic and create a new topic if appropriate. Continue reading
Archived 2014 discussion: Xantus’s Murrelet (Synthliboramphus hypoleucus) is being split: list S. hypoleucus as Endangered and S. scrippsi as Vulnerable?
Xantus’s Murrelet Synthliboramphus hypoleucus is being split into S. hypoleucus and S. scrippsi, following the application of criteria set out by Tobias et al. (2010), and consideration of genetic evidence (Birt et al. 2012). Continue reading
Archived 2014 discussion: Matsudaira’s Storm-petrel (Oceanodroma matsudairae): request for information
Matsudaira’s Storm-petrel Oceanodroma matsudairae is known to breed at least on Minami-iwo-jima and perhaps formerly on Kita-iwo-jima, both situated in the Volcano Islands (=Kazan Retto), Japan (Chiba et al. 2007), and may also breed on the Ogasawara Islands (Brazil 1991, 2009). It is currently listed as Data Deficient on the basis that insufficient information was available for the evaluation of its status against the IUCN criteria.Further information on this species is requested to help in the assessment of its threat status. Continue reading
Archived 2014 discussion: Kittlitz’s Murrelet (Brachyramphus brevirostris): is it eligible for downlisting?
It is proposed that the species’s status be re-evaluated. However, there is a lack of consensus regarding the species’s current population trend, with views that the species may be declining more slowly than previously thought, or that it could be stable or increasing. Further information is requested on the likely trend over a period of three generations. Continue reading
Archived 2014 discussion: Fea’s Petrel (Pterodroma feae) is being split: list P. deserta as Vulnerable and P. feae as Near Threatened?
Fea’s Petrel Pterodroma feae is being split into P. feae and P. deserta, following published studies (e.g. Robb et al. 2008, Jesus et al. 2009), in particular highlighting differences between these taxa in breeding seasonality and vocalisations. Continue reading
Archived 2014 discussion: The newly described taxon Oceanites pincoyae is to be recognised as a species by BirdLife: list as Data Deficient?
The newly described taxon Oceanites pincoyae (Harrison et al. 2013) is to be recognised as a species following application of the Tobias et al. (2010) criteria, which support its distinctiveness from congeners. Continue reading
Final decisions have been reached on the 2013 forum consultations. These are subject to approval and ratification by the IUCN. Continue reading
The attached spreadsheet lists preliminary decisions for the 2013 Red List update. Continue reading
BirdLife Species Factsheet for White-capped Albatross White-capped Albatross Thalassarche steadi has been listed as Near Threatened (approaching the thresholds for Vulnerable under criterion A2de, A3de, A4de) since 2007, when Diomedea cauta was split into Thalassarche steadi and T. cauta. The … Continue reading
BirdLife Species Factsheet for Grey-headed Albatross Grey-headed Albatross Thalassarche chrysostoma is currently listed as Vulnerable under criterion A4bd on the basis of an estimated population decline of 30-49% over three generations (90 years). This estimate is based on documented declines … Continue reading
Archived 2012-2013 topics: Black-browed Albatross (Thalassarche melanophrys): downlist to Near Threatened?
BirdLife Species Factsheet for Black-browed Albatross Black-browed Albatross Thalassarche melanophrys is currently listed as Endangered under criterion A4bd on the basis of a projected ongoing population decline of more than 50% over three generations (65 years). Around 70% of the … Continue reading
Archived 2012-2013 topics: Black-footed Albatross (Phoebastria nigripes): downlist to Near Threatened?
BirdLife Species Factsheet for Black-footed Albatross Black-footed Albatross Phoebastria nigripes breeds on the Northwestern Hawaiian Islands (USA), the US Minor Outlying Islands and three outlying islands of Japan, colonies having been lost from other Pacific islands. The species is currently … Continue reading
BirdLife Species Factsheet for Amsterdam Albatross Amsterdam Albatross Diomedea amsterdamensis breeds only on Amsterdam Island (French Southern Territories) in the southern Indian Ocean. Snce 1994 it has been listed as Critically Endangered under criteria (B2ab(v); C2a(ii)), since it was estimated … Continue reading
BirdLife species factsheet for Olrog’s Gull Olrog’s Gull Larus atlanticus breeds on the coast of Argentina between 38°49′ and 45°11′S (Yorio et al. 2005). It is currently listed as Vulnerable under B1ab(ii,iii,v); C2a(i) because it has a small range and population (<10,000 … Continue reading
BirdLife species factsheet for Cape Cormorant Cape Cormorant Phalacrocorax capensis is restricted to the West and South Coast of South Africa, Namibia and southern Angola. It is currently listed as Near Threatened under criteria A2b+3bc+4b, owing to moderately rapid declines in its … Continue reading
Northern Royal Albatross Diomedea sanfordi is listed as Endangered under criteria A4b,c; B2a+b(iii,v) on the basis that the species occupies an Area of Occupancy of less than 10 km2, including fewer than five locations (three island groups), in which the population is estimated to be undergoing a very rapid decline. Further information on this species’s current and projected population trends over a period of 81 years (revised estimate of three generations), as well as the estimated population size, is requested to help in the assessment of its threat status.
Archived 2012-2013 topics: Macaroni Penguin (Eudyptes chrysolophus): correctly listed as Vulnerable?
The validity of the current assessment for this species has been brought into question by a review by the US Fish and Wildlife Service (USFWS 2008). Criticisms, combined with suggestions that some populations are stable or increasing, or have unknown trends, suggest that the overall estimated rate of decline should be reduced for this species. Comments on the current listing and further information on the species are requested. Continue reading
2011-2012 Forum topics Final decisions The attached spreadsheet lists the results of the 2012 forum consultations, subject to approval and ratification by IUCN. Please use the filters to look for your region or species group of interest. Any discussions of … Continue reading
2012 forum topics provisional decisions The attached spreadsheet lists preliminary decisions for the 2012 Red List. Please use the filters to look for your region or species group of interest. There will now be a further final opportunity to make … Continue reading
To explore the impact of uncertainty on the overall trend and category, a number of alternative scenarios were also explored (see attached spreadsheet). When the trend assessments were re-run, only the most optimistic scenarios altered the potential Red List category (from Endangered to Vulnerable or Near Threatened), i.e. assuming Italy is experiencing the minimum decline rate and countries with unknown trends are stable.
This suggests that the species’s global status ought to be revised to Vulnerable under criterion A4b,c,d,e, as it is projected to suffer a rapid population reduction (30-49% decline over three generations). Comments on this proposal and any relevant information (particularly including trend information for additional countries) are invited. Continue reading
The species’s population trend is suspected to be stable; however, the islands on which it is known to breed are inhabited by introduced cats, rats and dogs. The species is also potentially impacted by logging, which may actually be the most important threat (C. Collins pers. comm.). Any evidence that suggests a decline is occurring in the population might make the species eligible for uplisting to Endangered under criterion C2a(ii). Continue reading
A recently published study has improved our knowledge of this species’s status, including the threats it faces. Sato et al. (2010) describe threats at breeding sites as including mining operations, introduced predators and tourism. Further information is sought on the likely population trend in this species. Continue reading
Black-footed Albatross Phoebastria nigripes is currently listed as Endangered under criterion A4b,d, on the basis that its population is projected to decline by more than 60% over 56 years (estimate of three generations), as modelled using a moderate scenario for fisheries bycatch of 8,000 birds per year (Lewison and Crowder 2003). The recent analysis presented by Arata et al. (2009) brings into question the validity of the species’s current Red List status. It suggests that the rate of projected decline should be lowered, which could result in the species becoming eligible for downlisting. Continue reading
Archived 2011-2012 topics: The effects of projected climate change on the Southern Ocean and Antarctic environment: uplist Emperor Penguin (Aptenodytes forsteri) to Vulnerable and Adelie Penguin (Pygoscelis adeliae) to Near Threatened?
In a recent paper by Ainley et al. (2010), Emperor Penguin Aptenodytes forsteri and Adelie Penguin Pygoscelis adeliae are predicted to decline in the northern part of their respective ranges during the next 15-42 years owing to projected changes in sea ice and precipitation. Continue reading
The discussion period for the 2011 Red List has now finished and final decisions have been taken – these decisions will be incorporated into the 2011 Red List, which will be released by BirdLife in May 2011, and by IUCN … Continue reading
The attached spreadsheets list the draft decisions for the 2011 IUCN Red List. There is now a final opportunity for comments on these proposals prior to a final deadline of 21 February 2011. Africa 2010-2011 Americas 2010-2011 Asia 2010-2011 Europe … Continue reading
Collared Petrel Pterodroma brevipes is currently listed as Near Threatened, however on current available information it appears to meet the critera for listing as Vulnerable under C2a(i) i.e. <10,000 mature individuals with a continuing decline and no known population supporting >1,000 individuals. Continue reading
Flightless Cormorant Phalacrocorax harrisi is endemic to Fernandina and Isabela in the Galápagos Islands, Ecuador, and is currently classified as Endangered because it has a very small breeding range and a population which has been estimated to have undergone extreme fluctuations in the number of mature individuals. It is proposed to reclassify the Flightless Cormorant as Vulnerable under criterion D2 (as the species is capable of becoming Critically Endangered or even Extinct in a very short time period), because the population has not undergone extreme fluctuations and recent data suggests it may be stabilising at a new high . Continue reading