The Djoudj National Bird Sanctuary (French: Parc national des oiseaux du Djoudj, [d͡ʒud͡ʒ]) lies on the southeast bank of the Senegal River in Senegal, in northern Biffeche, north east of St-Louis.

Less conspicuous are the aquatic warblers migrating here from Europe; for these, the park is the single most important wintering site yet discovered.

The site was added to the list of World Heritage in Danger in 2000 due to the introduction of the invasive giant salvinia plant, which threatens to choke out the park's native vegetation.

Since operation of the Diama Dam on the Senegal River began in 1988, experts have observed a lowering of the water level, desalinization, and silting.

To the left, satellite photos take by NASA in 1979 (before construction of the dam) and 1999 (afterwards) give evidence of the significant impact on the region's ecosystem.