This 700-hectare nature preserve is 25km from Riohacha in Camarones. Pink flamingos inhabit this tranquil area in great numbers: up to 10,000 in the wet season (September through to December), and bunches of up to 2000 can usually be seen in one of the four lagoons within the park.
If you want to see the flamingos, you'll need to take a canoe (COP$30,000 for one to three people, and COP$15,000 per extra person) out on the water.
Skippers usually know where the birds are hanging out, but will not take you if they are beyond a reasonable distance.