- Africa (220)
- Americas (422)
- Archive (949)
- Asia (334)
- Australia (45)
- AZE (Alliance for Zero Extinction) (16)
- Europe & Central Asia (90)
- Illegal killing of birds (2)
- Middle East (61)
- Pacific (164)
- Species Group (257)
- Taxonomy (176)
Five most recent topics
- A re-evaluation of the species limits in Asian white-eyes Zosterops: implications and an appeal for information to assess the status of the newly-recognised Sangkar White-eye Z. melanurus
- Brown-cheeked Bulbul (Alophoixus bres): request for information
- Seychelles White-eye (Zosterops modestus): revise global status?
- Maroon-tailed Parakeet (Pyrrhura melanura) is being split: assessment of newly recognised taxa.
- The newly described taxon Rote Leaf-warbler (Phylloscopus rotiensis) is to be recognized as a species by BirdLife International.
Tag Archives: Hooded Grebe
Archived 2011-2012 topics: Hooded Grebe (Podiceps gallardoi): does it qualify as Critically Endangered?
The results of surveys conducted on more than 50 lakes and lagoons that could hold breeding populations, including the six key waterbodies that held c.40% of the total population in the 1980s, suggest that the rate of decline may have been more rapid than previously thought (Imberti and Casañas 2010). When mean counts from the 1980s are summed across these six main sites, a total of 1,832 adults are estimated to have been recorded; however, surveys at these same sites in 2009 yielded records of only 117 adults. Furthermore, an estimated total of c.580 nests were recorded at these six sites during the 1980s, with not one found during the surveys in 2009 (Imberti and Casañas 2010). The difference in the number of adults recorded suggests that a decline of c.94% has occurred at these sites over c.24 years. This equates to a decline of 90.5% over the past 21 years, assuming an exponential trend. Continue reading