Ils sont peuplés d'une variété exceptionnelle d'oiseaux — cigognes noires et blanches, aigles, autours, grues, râles des genêts, sternes, roselins, gorges bleues et milans royaux —, sans compter d'autres espèces.
The Biebrza Marshes are considered to be one of Europe's most important wetland areas, and are home to an extraordinarily wide variety of birds, including Black and White storks, eagles, goshawks, cranes, corncrakes, terns, rosefinches, bluethroats and kites, as well as other types of fauna.not-set not-set