RT info:eu-repo/semantics/article
T1 Assessment of habitat suitability for the globally threatened Cock-tailed Tyrant Alectrurus tricolor (Passeriformes: Tyrannidae)
A1 Cacciali Sosa, Pier
A1 Sforza Fernández, Lorena
AB Cock-tailed Tyrant Alectrurus tricolor (Vieillot, 1816), a Vulnerable South American grassland specialist, is facing substantial habitat loss due to land-use change by agricultural and forestry expansion. This study aims to assess the current distribution and suitable habitat availability for Cock-tailed Tyrant using species distribution modelling (SDM) and recent distributional data from the Global Biodiversity Information Facility (GBIF). Occurrence data from 1,583 records, mapped by season and habitat type, were used to generate a MaxEnt model with a high predictive accuracy (AUC = 0.974). Results revealed three main distributional clusters: one in Brazil, another spanning Mato Grosso do Sul, Paraguay and north-eastern Argentina, and a separate group in the Bolivian lowlands. Seasonal analysis found no significant distributional shifts, supporting previous findings of the species’ non-migratory behaviour. Key environmental contributors to habitat suitability included ecoregion type, precipitation, and vapour pressure. The predicted suitable habitat covers approximately 177,753 km². These findings underscore the urgent need for conservation efforts focusing on critical grassland habitats, particularly within the Cerrado, Southern Cone Mesopotamian grasslands, and Beni savanna biomes. Sustainable land-use practices, grassland restoration, and periodic habitat reassessments are essential to preserve Cock-tailed Tyrant populations and support the biodiversity of South American grasslands.
PB Cambridge University Press
SN 0959-2709
YR 2025
FD 2025-11-19
LK http://hdl.handle.net/20.500.14066/4707
UL http://hdl.handle.net/20.500.14066/4707
LA eng
NO Cacciali, P., & Sforza, L. (2025). Assessment of habitat suitability for the globally threatened Cock-tailed Tyrant Alectrurus tricolor (Passeriformes: Tyrannidae). Bird Conservation International, 35, Article e37, 1-10.https://doi.org/10.1017/S0959270925100269
NO Corresponding author: Pier Cacciali; Email: pier_cacciali@yahoo.com.
NO Consejo Nacional de Ciencia y Tecnología
DS MINDS@UW
RD 04-sep-2026