The Marshes of Kaw, located in French Guiana, are a remarkable natural reserve. Here’s more information about them:

1. Location:
   The Marshes of Kaw are situated at **Dégrad de Kaw, Réserve Naturelle, Arrondissement of Cayenne, 97353.
2. Size and Significance:
   The Réserve Naturelle des Marais de Kaw-Roura is the second-largest natural reserve in France, covering a total area of 94,700 hectares. It serves as a haven for wildlife, especially birds.
3. Fauna and Flora:
   The marshes harbor a diverse range of wildlife, with a particular focus on bird species. You can spot various types of caimans, including black, grey, red, and spectacled caimans. The flora and fauna are rich and varied, providing a unique experience for visitors.
4. Visits:
   Typical tours involve small boats or canoes accommodating 6 to 12 people. These excursions last from 2:00 PM to 10:00 PM, allowing you to observe wildlife during late afternoon and nighttime. Be prepared for sun exposure and the possibility of getting wet. Some boats even offer overnight options for staying within the marshes.
5. Practical Tips:
   Before booking a trip, ask to see photos of the boat to ensure your comfort during the 8+ hours of exploration. Bring adequate sun protection, and inquire about the English language skills of your boat crew. Unfortunately, as with other tours I’ve taken in French Guiana, guides typically do not speak English.

In summary, the Marshes of Kaw are a natural treasure to discover during your stay in French Guiana.