QCOSTARICA — The Universidad Nacional de Costa Rica (UNA) – National University of Costa Rica, is working on a protocol to monitor crocodiles with drones.
The objective of the research is to conduct a count of individuals, as to date there are no recent studies indicating the number of crocodiles in the country.
Specialists indicate that populations have recovered, but there is no exact data to determine whether or not there is an overpopulation.
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With the help of drones, it will be possible to better observe their distribution in rivers and estimate the population and its structure through size.
In contrast, manual monitoring requires researchers to explore the river at night and shine flashlights into the animals’ eyes to count and estimate their size, which involves risks and a high cost in equipment and trained personnel.
Costa Rica is home to two types of crocodilians: the American crocodile (Crocodylus acutus) and the Spectacled caiman (Caiman crocodilus).
The American crocodile, known for its size and preference for both fresh and saltwater habitats, is a common sight in rivers, estuaries, and coastal areas. The smaller Spectacled caiman, on the other hand, is typically found in freshwater environments like rivers, swamps, and lagoons.
American Crocodile:
- Can grow up to 6 meters long.
- Found in both fresh and saltwater, including rivers, estuaries, and the ocean.
- Nocturnal hunters, feed on fish, turtles, snakes, crustaceans, and larger mammals.
- Generally shy and not aggressive unless threatened, though they can be territorial.
- Common locations include the Tempisque River, Tarcoles River, and wetlands along the Pacific Coast.
Spectacled Caiman
- Smaller than the American crocodile, typically reaching around 1.5 to 2 meters in length.
- Primarily found in freshwater environments like rivers, swamps, and lagoons.
- Feeds on crustaceans, fish, insects, and snails.
- More shy and less likely to be seen compared to the American crocodile.
- Common locations include Maquenque Eco-Lodge lagoon, other rivers, and swamps.
Crocodiles and caimans are protected by law in Costa Rica. It’s important to be aware of their presence and avoid swimming or wading in areas where they are known to inhabit.
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