It lays a single egg per season. After leaving the nest, the young bird depends on its parents for more than eight months.
Nest 1
The camera goes live soonStreaming on YouTube
Nest 1
Stage: to be confirmed
[Nest update, one line, refreshed every week.]
Nest 2
The camera goes live soonStreaming on YouTube
Nest 2
Stage: to be confirmed
[Nest update, one line, refreshed every week.]
Nest stories
Yupanqui has left his parents’ territory
Chavela and Pampero’s chick fledged in March. After the winter he began his dispersal.
Read the storyClose
Yupanqui is the chick of Chavela and Pampero, a Chaco Eagle pair that we
follow with cameras. He fledged on 14 March 2026 and we went months without news of him,
until he reappeared.
The months with his parents
After leaving the nest, Yupanqui stayed with Chavela and Pampero within their breeding
territory, which can cover thousands of hectares. His parents fed him and taught him
to hunt so that he could fend for himself.
The end of dependence
Over the winter, Yupanqui became more skilled at flying and hunting. Then came the end
of post-fledging dependence, the moment when a juvenile leaves its parents’ territory and
begins its dispersal.
Thanks to the cameras, we observed for the first time in this species how the parents drive the
juvenile away from the nest and the territory, and stop feeding it even when it begs for food.
If he survives the threats the species faces, Yupanqui may reach adulthood
and breed. Only a small proportion of juveniles do.
A new cycle
For years it was thought that the Chaco Eagle bred every two years, because juveniles
depend on their parents for so long. A genetic study by our team showed that it can
breed every year. Now we are also seeing it live: Chavela and Pampero have already begun
preparing the nest for a new attempt.
To protect the nests, their locations are kept confidential. When a camera is
off air, we show what it recorded.
These cameras are funded by donations
The streams need equipment, power and a connection in the field. Your donation keeps
them running all season, and every recording adds to the research.
Nest box
Nest 1
Nest 2
