Breeding phenology and nest survival of cinereous (circus cinereus) and long-winged (c. buffoni) harriers in the agricultural landscapes of north-east Patagonia, Argentina

Authors
Segura, Luciano Noel; Bó, Maria Susana
Publication Year
2017
Language
English
Format
article
Status
Published version
Description
We present novel data on breeding ecology and nest survival of the Cinereous (Circus cinereus) and Long-winged (C. buffoni) Harriers in modified grasslands of southern Argentina and we evaluate variations in daily nest survival rates (DSR) in relation to temporal and habitat variables. We studied three mixed nesting colonies embedded in agricultural landscapes along a road. We found that DSR decreased linearly with time of breeding and increased with vegetation height above the nest and the distance to the road. This is the first and most complete reproductive study concerning two species of conservation concern, namely the Cinereous and Long-winged Harriers in Patagonia. Our study provides valuable and novel insights into the population dynamics of these little-known species.
Fil: Segura, Luciano Noel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados. Sección Ornitología; Argentina
Fil: Bó, Maria Susana. Universidad Nacional de Mar del Plata; Argentina
Subject
BREEDING SUCCESS
GRASSLANDS
NEOTROPICAL RAPTORS
NESTING HABITATS
WETLANDS
Otras Ciencias Biológicas
Ciencias Biológicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/57071