Abstract
In the present work we present the observation and record of Olive-sided Flycatcher (Contopus cooperi) in a public park of Trelew city (Rawson Department, Chubut province, Argentina). This record is the third of the species for the country, the first for Chubut province and the southernmost in the world.
References
Altman B, Sallabanks R (2020) Olive-sided Flycatcher (Contopus cooperi), version 1.0. En Birds of the World, Poole AF (ed). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.olsfly.01. Accedido el 25/4/2025
Ayestarán MG (2025) eBird Checklist: https://ebird.org/checklist/S223557258. eBird: An online database of bird distribution and abundance. eBird, Ithaca, New York. Accedido el 14/1/2026.
Ayestarán MG (2025) Burlisto Oliváceo (Contopus cooperi). EcoRegistros: https://www.ecoregistros.org/ficha/Contopus-cooperi&idusuario=3545. Accedido el 14/1/2026
BirdLife International (2025) Species factsheet: Olive-sided Flycatcher. https://datazone.birdlife.org/species/factsheet/olive-sided-flycatcher-contopus-cooperi. Accedido el 25/4/2025
Ferrer DG (2015) Primer registro documentado del Burlisto Oliváceo (Contopus cooperi) en Argentina. El Hornero 30(1): 25-27. https://doi.org/10.56178/eh.v30i1.604

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
