This discussion was first published as part of the 2016 Red List update. At the time a decision regarding its status was pended, but to enable potential reassessment of this species as part of the 2018 Red List update this post remains open and the date of posting has been updated.
Restinga Tyrannulet is endemic to the Atlantic coast of south-east Brazil, from São Paulo to Rio Grande do Sul. The species is listed as Vulnerable under A2c+3c+4c; C2a(i). The species probably has a small population, which is fragmented and rapidly declining in response to extensive habitat loss. The population is estimated to number 2,500-9,999 mature individuals. The population is suspected to be declining rapidly, in line with rates of habitat loss within the species’s range. The largest subpopulation is estimated to contain 251-1,000 mature individuals and the species’s Extent of Occurrence (EOO) was estimated at 5,500 km2.
In the Brazilian Red List assessment for birds (MMA 2014) this species is listed as Least Concern. For the species to be listed as Least Concern the species’s past/future/past+future population reduction would have to be <c25 % in three generations (criterion A) and the population would either have to be >10,000 mature individuals or not undergoing a continuing decline with >1,000 mature individuals in each subpopulation.
Up-to-date information is requested on the species’s population size and trend. Confirmation that the species no longer meets the thresholds for Vulnerable under A2c+3c+4c or C2a(i) would qualify the species for downlisting to Near Threatened or Least Concern. Comments on the proposed downlisting are welcome.
MMA (2014) Lista Nacional Oficial de Espécies da Fauna Ameaçadas de Extinção. Portaria No 444, de 17 de dezembro de 2014. Diário Oficial da União – Seção 1. Nº 245, quinta-feira, 18 de dezembro de 2014.