This discussion was first published on Dec 3 2010 as part of the 2010-2011 Red List update, but remains open for comment to enable reassessment in 2012.
Initial deadline for comments: 31 January 2012.
Baer’s Pochard Aythya baeri is currently classified as Endangered as it is estimated to have undergone a very rapid population decline of 50-79% in the period 1998-2008, with a global population estimated at 5,000 mature individuals.
Unconfirmed reports from eastern China suggest as many as 3,000 individuals may be hunted every year (Lei Gang in litt. 2010). The revised generation length estimate for this species is 7.6 years (BirdLife International unpublished data), meaning that the rate of decline over three generations for this species would now be assessed over a 23 year period. If there was sufficient reason to believe the global population of Baer’s Pochard may have declined at a rate of at least 80% over the period 1988-2011, or is predicted to do so in the next 23 years, or is estimated/predicted to do so in any 23 year period including both the past and the future (eg. 1995-2018), then the species should be reassessed as Critically Endangered, the highest category of threat.
Up to date counts from either breeding, passage or wintering sites, particularly if these counts are available over a series of years, would be extremely useful in enabling us to estimate population trends in this species.