News and Updates

2018 International Migratory Bird Day Festival

At Osa Birds fifth-annual International Migratory Bird Day Festival, children danced in the streets dressed as flamboyant, richly colored birds, holding feathered wings aloft.  An integral piece that gives flight to this event is the Tropical Wings annual Birdathon,...

White-crowned Sparrow

New About Town This juvenile White-crowned Sparrow (Zonotrichia leucophrys) showed up mid November in the town of Rancho Quemado on the north end of the Osa Peninsula.  It was first observed by Yolanda Rodriguez Corrales who is a member of the Biological Monitoring...

Festival News

¡El 1er Festival Internacional de Aves Migratorias estuvo este Primero de Marzo y fue un evento más exitoso que pude haber jamás imaginado! Con la participación de mas de 200 invitados, caminatas de aves entretenidas, charlas educativas, baile típico, stands...

Featured Bird: Mourning Dove

La Paloma Huilota (Zenaida macroura) es un ave migratoria neotropical y residente común que se encuentra en Los Estados Unidos todo el año y se reproduce principalmente en el central norte de los Estados Unidos y Canadá.  El rango invernal se extiende desde México...

Featured Bird: Chestnut-sided Warbler

Simplemente porque es de la famila Parulidae, la familia con más representantes de aves migratorias en la Península de Osa, les traigo la Reinita de costados castaños (Setophaga pensylvanica), la reinita y ave migratoria más común que se encuentra aquí.  De solo 10 cm...

Featured Bird: Golden-winged Warbler

The Golden-winged Warbler (Vermivora chrysoptera) is a North American Neotropical migratory bird in the family Parulidae that breeds primarily in the United States and overwinters on the Osa Peninsula from approximately October through March.  It is the first in our...

Presenting Osa Birds!

PRESENTING OSA BIRDS! This is the official launch of the Osa Birds: Research and Conservation website!  We are a non-profit charitable organization dedicated to birds on the Osa and southern Pacific region.  Our presence here on the Osa Peninsula and surrounding areas...

Taxonomic Changes

IT'S ALL IN THE NAME! Here is a list of some of the newest taxonomic name changes for birds. New common names [highlighted in Bold] for birds found either on the Osa or in the southern Pacific region are listed below.  For other taxonomic order changes or...