150 birds in 2000. BI claimed that the population growth was decreasing, but did not elaborate on their reasoning. The global population was censused at 246 birds in 2001 (Gilardi), 455 in 2003, and the Brazilian Institute of Environment and Renewable Natural Resources (IBAMA) censused 570 wild birds in 2004. In their 2004 assessment, BI gave a much increased population of 246-280 birds, but continued to claim that the population was decreasing, again without reasoning. Barros counted a total wild population of 630 birds in 2006. In June 2007 Fundação Biodiversitas staff counted 751 individuals. Develey counted a total wild population of 960 birds in 2008. In the 2008 assessment BI countered that earlier surveys undercounted the birds, and that the population was not actually increasing. BI estimated a population of 250-500 mature wild individuals in 2008, arguing that because the population was probably increasing, most of the birds counted by in recent surveys were probably juveniles and therefore did not count as to the total population. BI states that if these juveniles mature over the next few years and the population grows from 250-500 to over 250 individuals, the species would need to be downlisted in the future. The population growth was stated to be uncertain, with BI reasoning that because in the 1990s some 40 birds had been trapped for the pet trade, which had represented a "very rapid decline", it was unclear if the increasing population was increasing. BI assessed the species as 'critically endangered' up to the 2008 assessment, apparently somewhat mistakenly. In 2000, 2004 and 2008 the reason given for it being 'critically endangered' was because criterium C2a(ii) applied. There is no criterium C2a(ii) for 'critically endangered' species, but there is for 'endangered' species. This states that if 95% or more of the population is found in a single subpopulation, and the total population is 2,500 or less, the species should be assessed as endangered. This was not true, it was known that there were two subpopulations, perhaps three since a new discovery of 22 birds at another roosting location in 1995, but BI filled in this information incorrectly in the Population section, despite elaborating on the different subpopulations in the Geographic Range section in the same assessment. In the 2009 assessment, the conservation status of the species was downgraded to endangered from critically endangered by BI, as it was by now clear that the