Foraging Behavior of Zonotrichia capensis (Passeriformes: Emberizidae) and Patch Value in Young Live Fences in the Bogotá High Plateau ; Forrajeo de Zonotrichia capensis (Passeriformes: Emberizidae) y valor del parche en cercas vivas jóvenes de la Sabana de Bogotá

The Rufous-collared Sparrow Zonotrichia capensis is a widely distributed species in neotropical America, it is tolerant to human interventions, but we know little about its foraging ecology on the Colombian Andes. Therefore, we studied the foraging strategy and, additionally, the value of foraging patches along two young live fences (< 2 year planted) in relation to the Bogota River in Cajica, in an Andean highland plateau in Colombia. The Bogota River is one of few areas dominated by arboreal vegetation in an urban- rural matrix at the study site. We used artificial food patches made of al... Mehr ...

Verfasser: Tellez-Farfán, Lorena
Sánchez, Francisco Alejnadro
Dokumenttyp: Artikel
Erscheinungsdatum: 2016
Verlag/Hrsg.: Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Departamento de Biología
Schlagwörter: Andes / Colombia / foraging strategy / optimal foraging / use of space / estrategia de forrajeo / forrajeo óptimo / uso del espacio / oraging strategy / Ciencias biológicas
Sprache: Spanish
Permalink: https://search.fid-benelux.de/Record/base-27653248
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://revistas.unal.edu.co/index.php/actabiol/article/view/52605

The Rufous-collared Sparrow Zonotrichia capensis is a widely distributed species in neotropical America, it is tolerant to human interventions, but we know little about its foraging ecology on the Colombian Andes. Therefore, we studied the foraging strategy and, additionally, the value of foraging patches along two young live fences (< 2 year planted) in relation to the Bogota River in Cajica, in an Andean highland plateau in Colombia. The Bogota River is one of few areas dominated by arboreal vegetation in an urban- rural matrix at the study site. We used artificial food patches made of aluminum trays with seeds mixed with sand. We measured the proportion of food consumed in patches with different initial food density to determine whether sparrows obtain information from the patch. We also used artificial patches to determine whether distance to the river affected the sparrow’s foraging in two young live fences. Our results indicate that Z. capensis did not gather any information from the patch and did not differentiate patches with different amounts of food. Furthermore, the distance to the river affected the value of food patches, but only in one of the live fences, where there was higher food consumption close to the river. Apparently, the food initial-density did not affect the patch exploitation level by sparrows, but the patch value in young live fences could be influenced by distance to the river. ; El copetón Zonotrichia capensis tiene una amplia distribución en América neotropical, es un ave tolerante a las intervenciones humanas, pero sabemos poco sobre su comportamiento de forrajeo en los Andes colombianos. Por ello, estudiamos la estrategia de forrajeo del copetón y, adicionalmente, el valor de parches alimentarios a lo largo de dos cercas vivas jóvenes (plantación < 2 años), en relación con la distancia a una zona de ronda del río Bogotá, en Cajicá, Sabana de Bogotá, Colombia. El río es un área dominada por árboles en una matriz rural a urbana. Utilizamos parches artificiales hechos de ...