Bird Banding Workshop 2022

This workshop is Full! Thank you for your interest and check back in 2023


Photograph by: Manuel Sanchez


Conserving Birds And Their Habitats On The Osa Peninsula Through Research And Education

Habitat Restoration

Osa Birds partnered with Tropical Wings and the Biological Monitoring Group of Rancho Quemado to restore fragmented and degraded habitat.

Citizen Science

Osa Birds works with Osa communities to monitor bird population tendencies through citizen science and engaging kids and adults in organized bird counts.

Community Outreach

Education is woven into everything we do!  We raise awareness of bird conservation and habitat protection within the local schools and communities through and community events.

Taxonomic Redux 2021

See this year’s taxonomic changes for birds in the Osa region (ACOSA) found in the 62nd supplement of the journal Ornithology.

Checklist of Birds

Here you will find the newest updated Checklist of Birds for the entire Osa region including the Osa Peninsula, Sierpe and Punta Burica.


find out how the US Fish and Wildlife Service is partnering with Osa Birds and IBP to make Osa part of this integral international bird banding network.


Reforesting Riparian Areas

Reforesting Riparian Areas

Today the Biological Monitoring Group of Rancho Quemado and the Junior Park Guards gathered to restore a degraded watershed along the Riyito River at the bridge entrance to Rancho Quemado.  Plants such as Heliconias, Episcias lilacinas, Calateas, Rubeaseas, Estococas...

Taxonomic Changes to Birds 2019

Taxonomic Changes to Birds 2019

Ver la Traducción al Español Abajo. The new common and or scientific names are highlighted in Bold below for birds found either on the Osa Peninsula or in the southern Pacific region of Costa Rica.  For other taxonomic order changes or merges/splits, please refer to...