In the Patagonian steppe, an extreme ecosystem shared with the Puna and the High Andes, a unique fauna resides. Among its exclusive species is the Magellanic plover (Pluvianellus socialis), considered one of the most threatened migratory shorebirds on the planet.
This small bird, resembling a dove, measures about 18 cm, weighs between 80 and 90 grams, and is difficult to observe due to its ability to blend into the environment. Its reproduction occurs on the edges of saline lagoons in the steppe, environments today affected by drought and climate change.
Critical population
It is estimated that fewer than 1,000 individuals remain in the wild, placing it in a critical conservation status. Its importance is twofold:
- It is the only representative of the Pluvianellidae family, so its extinction would mean the total loss of a unique evolutionary lineage.
- It is an indicator of environmental health, as its presence reflects the good condition of the aquatic ecosystems of Patagonia.
In recognition of its fragility, it was declared a Provincial Natural Monument in Santa Cruz (Argentina).
Pluvianellus Project
The NGO Ambiente Sur created the Pluvianellus Project to save the species through voluntary conservation agreements between producers, ranchers, companies, public agencies, and environmental organizations.
The goal is to harmonize productive activity with biodiversity conservation. According to Germán Montero, executive director of the NGO, “the plover is a very fragile animal that often nests in private fields with productive activity, so a way was devised to protect the species by making minimal interventions in the field so they can coexist with livestock.”
Action strategies
The agreements are developed in two phases:
- Diagnosis and planning: inventory of birds and analysis of each field.
- Implementation: protection of nests, management, and monitoring of populations.
Among the first measures is the installation of nest protectors and the training of producers to reduce risks.
International cooperation
At the COP15 of the Convention on Migratory Species (CMS), held in Campo Grande (Brazil), Argentina and Chile managed to approve a Concerted Action to conserve and recover the Magellanic plover. This binational agreement strengthens cooperation in protecting an emblematic species of southern Patagonia.
Main threats
- Habitat loss: historical drought dries up the lagoons where they nest.
- Climate change: alters reproductive cycles and water availability.
- Low population: with fewer than 1,000 individuals, the species is extremely vulnerable to any disturbance.
The conservation of the Magellanic plover is critical not only for its rarity but because it represents a unique evolutionary lineage and an indicator of the health of Patagonian ecosystems.
The Pluvianellus Project and international agreements show that collaboration between communities, producers, and governments is essential to prevent its extinction and ensure that this bird continues to be part of the southern landscape.
