IDEA   23902
INSTITUTO DE DIVERSIDAD Y ECOLOGIA ANIMAL
Unidad Ejecutora - UE
artículos
Título:
Year-round presence of Slaty Thrush (Turdus nigriceps nigriceps) in mountains of central Argentina
Autor/es:
VERGARA-TABARES, DAVID LAUTARO; ROJAS, TOBIAS NICOLAS
Revista:
ARARAJUBA: REVISTA BRASILEIRA DE ORNITOLOGIA
Editorial:
SOC BRASILEIRA ORNITOLOGIA
Referencias:
Lugar: Pelotas, RS; Año: 2016 vol. 24 p. 329 - 329
ISSN:
0103-5657
Resumen:
The migration patterns of passerine species in the Neotropical region present several gaps of knowledge. The migratorybehavior of the Slaty Thrush (Turdus nigriceps nigriceps) has been well characterized in their central and northern distributionalong eastern slopes of the Andes from Argentina to Ecuador. The Slaty Thrush was historically considered a migrant breeder inthe southern extreme of their distribution. In the present study, we show new evidence of the resident status of this species in itssouthernmost distribution on western slopes of Sierras Grandes and Sierras de Comechingones in Córdoba Province, Argentina. There, the Slaty Thrush has a year-round presence only at sites invaded by fleshy-fruited alien plants. The main invasive plants form dense patches of vegetation and offer an abundant fruit supply that is highly consumed by this bird species during autumn?winter,when there are no native fruits available. We suggest that the Slaty Thrush was a migrant species in past decades, but the recentinvasion by fleshy-fruited species could explain its actual year-round presence by providing fruit in a period of the year of foodshortage and new suitable habitats.