Wildlife watching in the Biebrza Marshes

The Biebrza valley never got drained, which makes it the biggest intact marshland in this part of the world and one of Europe's great birding sites.

Spring flooding is the moment. Elk standing chest-deep in water, aquatic warblers in a habitat that barely exists anywhere else, great snipe lekking at dusk, and a dawn chorus across a landscape with no hard edges in it. You get around by kayak, by boardwalk, and by wading.

The Biebrza valley never got drained, which makes it the biggest intact marshland in this part of the world and one of Europe's great birding sites.

Spring flooding is the moment: elk standing chest-deep in water, aquatic warblers in a habitat that barely exists anywhere else, great snipe lekking at dusk, and a dawn chorus across a landscape with no hard edges in it.

You get around by kayak, by boardwalk, and by wading, so chest waders are standard kit rather than optional. The mosquitoes are genuinely punishing from June, and some zones close during the breeding season — this is watchful, patient, sometimes soggy wildlife-watching, not a stroll.

A park ticket is required, and some areas need a guide — book a local one, because the good spots are not obvious and the terrain is hard to read. Time it right: April for the flood and the elk, May for the birds; both beat the punishing June-onward mosquitoes.

Bring chest waders as standard, plus binoculars and serious insect protection. Base around Goniądz or the villages at the valley's edge. Come prepared to move by kayak, boardwalk and on foot through water, and to wait quietly at dawn and dusk.

Respect the breeding-season closures — they are there for exactly the species you came to see.