MOVEMENT PATTERNS OF ADULT MALE OVENBIRDS DURING THE POST-FLEDGING PERIOD IN FRAGMENTED AND FORESTED BOREAL LANDSCAPES1
- 1 January 2001
- journal article
- Published by Oxford University Press (OUP) in Ornithological Applications
- Vol. 103 (2) , 343
- https://doi.org/10.1650/0010-5422(2001)103[0343:mpoamo]2.0.co;2
Abstract
Movement of forest songbirds among isolated forest patches following breeding represents an important but poorly understood component of landscape ecology and metapopulation theory. Using radio-telemetry, we followed 44 male Ovenbirds (Seiurus aurocapillus) during the post-fledging period to determine if movement patterns differed in landscapes dominated by agriculture versus those dominated by forest. No differences in home-range size, mean distance moved per day, or maximum distance moved were observed for males captured in a forested landscape vs. those captured in forest fragments in an agriculturally dominated landscape. Male Ovenbirds observed with young moved less than males without young and rarely crossed open gaps. Individuals that failed to breed moved more extensively than successful breeders, possibly in an effort to find new territories for use in future breeding seasons. Resumen. Los movimientos de las aves canoras entre parches aislados de bosque tras la reproducción representan un importante pero poco entendido componente de la ecología del paisaje y la teoría de metapoblaciones. Usando radiotelemetría, seguimos 44 Seiurus aurocapillus durante el período posterior a la salida de los pichones del nido para determinar si existían diferencias en los patrones de movimiento de estas aves entre paisajes dominados por agricultura y paisajes dominados por bosques. No encontramos diferencias entre machos adultos capturados en un paisaje boscoso y en fragmentos de bosque inmersos en un paisaje dominado por sistemas agrícolas en términos del tamaño del área de hogar, la distancia promedio recorrida diariamente ni la máxima distancia recorrida. Los machos observados en compañía de pichones se movieron menos que aquellos sin pichones y raramente cruzaron claros abiertos. Los individuos que no lograron reproducirse se movieron más que aquellos que tuvieron éxito en la reproducción, posiblemente buscando nuevos territorios para utilizar en épocas reproductivas futuras.Keywords
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