Parental dependence of a juvenile Black-and-chestnut Eagle (Spizaetus isidori) in the Eastern Andes, Colombia

ZULUAGA, SANTIAGO; GRANDE, JUAN MANUEL; ARISTIZÁBAL, DANIEL FELIPE; GUEVARA, GIOVANY

ORNITOLOGIA NEOTROPICAL

NEOTROPICAL ORNITHOLOGICAL SOC

Lugar: ALEMANIA; Año: 2018

1075-4377

The Black-and-chestnut Eagle (Spizaetus isidori) is one of the least known Neotropical birds of prey, with scarce information about its basic biology throughout its entire distribution range. Information on the duration of its parental dependence is inexistent, although this is a key period in the natural history of birds which will impact the subsequent probability of survival, development of natal dispersion and finally reproduction. Here, we provide information on parental dependence, and report focal observation data describing behaviors, post-fledging movements and home range of a Black-and-Chestnut Eagle fledgling in the eastern Andes of Colombia. We monitored fledgling development from ca. 6 to 32 weeks of age. The young eagle left the nest at 13 weeks and the dependence period lasts until at least 28 weeks old. The home range estimated (kernel 95) reached 48.1 ha and the intensively used area (kernel 50) reached 4.0 ha. Further studies, using new tracking technology and focal observations will be needed to improve our understanding of the species? post-fledging period.