It has been a harsh breeding season for the Hook-billed Kites ( Chondrohierax uncinatus ) this year. Nesting started in March, little by...

Rosa, a female Hook-billed Kite was banded and tagged in 2023 and this year is nesting!

From October 28th to November 3rd, 2022, we held our 1st Basic Course on Bird Banding in Costa Rica, taught jointly by Proyecto Cerúlea...

One of the objectives of the recent workshop held at Las Brisas Nature Reserve was the deployment of Motus compatible transmitters on...

From the 27th of August to the 05th of September 2021, in conjunction with SELVA, we organized the first workshop on Advanced Techniques...

La existencia de un buen número de lagunas distribuidas en toda el área favorece la presencia de aves acuáticas aquí en Reserva Las...

Army ants are nomadic, constantly moving in search of arthropods which they catch to feed the larvae in their colony. When this happens,...

White-shouldered Tanagers show sexual dimorphism: males and females have a different plumage. Females are mostly greenish with a bit of a...

When catching birds for banding sometimes we recapture individuals which we had banded previously and when this happens we can recognize...

The past three days have brought an explosion of Cerulean Warblers to Las Brisas. Flocks of more than ten individuals, mostly adults,...

Bird migration this year from North America has been behind schedule due to the intense hurricane activity in the Caribbean. Debido a la...

Today was a very hot and steamy day with very little activity in the nets, however every day is different and there is always something...

Did you see the moon tonight? What a beauty, right? Because of weather we have not seen it for several days now. We came up to the...

One of the aspects about a bird's life we can learn through banding is longevity. Uno de los aspectos de la vida de las aves que podemos...

How would you tell if that silhouette is a wood-pewee? Usually you can tell by its slender shape, tufted head and the way it forages:...

Attila is the genus of a group of tyrant flycatchers characterized by having hooked bills and behaving loud and aggressively despite...

Western Wood-Pewee has been so far the most common Neotropical migrant at Las Brisas. This individual was feeding from a perch...

Migration has begun and among the earliest species arriving to Costa Rica are Eastern and Western Wood-Pewee, Olive-sided Flycatcher,...