No. 69 (2024)

Status of the Buff-fronted Owl (Aegolius harrisii) in northeast Argentina: distribution, vocalizations, behavior, habitat and abundance

Abstract

It is difficult to assess the status of the Buff-fronted Owl (Aegolius harrisii) in Argentina because a synthesis of current knowledge is lacking. We conducted field work in Misiones, Corrientes, and Chaco (Argentina; 2003–2024) and we reviewed third-party data, contributing 36 new localities that suggest a continuous distribution in northeastern Argentina. It is likely that the abundance and distribution of the Buff-fronted Owl have been underestimated because of characteristics of its vocalizations, similar to other owls (Megascops sp.) and amphibians (Rhinella sp.), but we can use dominant frequency to separate these species in sonograms. In Misiones, the Buff-fronted Owl occurs frequently in degraded environments but it appears to be rare in well-conserved Atlantic Forest. It is important to search for Buff-fronted Owl in Corrientes and Entre Ríos to determine the southern extent of its distribution in northeastern Argentina, and in the Dry Chaco to understand if there is a connection between populations of the subspecies iheringi in the northeast and dabbenei in the northwest.

References

How to cite

Alejandro Bodrati, Facundo G. Di Sallo, Nestor Fariña, Agostina Juncosa Polzella, Gabriel D. Moresco, Kristina L. Cockle (2024). Status of the Buff-fronted Owl (Aegolius harrisii) in northeast Argentina: distribution, vocalizations, behavior, habitat and abundance . Nuestras Aves, No. 69 (2024), 67-86. https://doi.org/10.56178/na.vi69.1049

Downloads

1656Full-text views
1Formats
CC

License: CC BY-NC 4.0