Breeding biology of the Yellow-browed Tyrant (Satrapa icterophrys) in south temperate forests of central Argentina

EXEQUIEL GONZALEZ; JAUREGUI ADRIAN; SEGURA LUCIANO NOEL

WILSON JOURNAL OF ORNITHOLOGY

WILSON ORNITHOLOGICAL SOC

Año: 2019

1559-4491

We describe the breeding biology of the Yellow-browed Tyrant (Satrapa icterophrys) in a natural forest of central eastern Argentina. We monitored 23 nests during three consecutive breading seasons (2015?2018). Modal clutch size was 3 eggs, incubation period was ~15 days and nestling period lasted ~16 days. The breeding season lasted from mid-October to late January and all nests were built in native tree species. Daily nest survival rate was 0.96, and the cumulative probability of nest survival in a nesting cycle was 26%. Our data contributes to the knowledge of the life history traits of south temperate bird species. As the Yellow-browed Tyrant only nested in native trees close to temporal or permanent water bodies, we highlight the importance of preserving this type of native habitat which is under constant threats of exploitation and development.