The park stretches in a narrow belt along the Biebrza, from near Lipsk to the river's mouth at the Narew by Wizna — less than an hour's drive from Łomża. In spring, during the thaw, the valley turns into a vast lake and thousands of waterbirds descend on the flooded meadows. That is when birdwatchers come here from all over Europe to see ruffs, black-tailed godwits, aquatic warblers and greater spotted eagles.
In summer and autumn the park shows a different face — the scent of hay-making, mist over the river at sunrise and a chance to meet an elk, of which the Biebrza has the largest population in the country. Wooden boardwalks lead across the valley (including the Tsar's Road, Długa Luka and the tower at Burzyn), along with cycling and water trails — you can paddle the Biebrza for as much as several dozen kilometres.
The base is the park headquarters in Osowiec-Twierdza, where you buy entry tickets and maps and learn about current conditions on the boardwalks. It is worth combining the visit with Osowiec Fortress — a Tsarist stronghold on the edge of the marshes.
Good to know
- Entry is paid — buy a ticket in Osowiec-Twierdza or at the machines by the trailheads.
- For sunrise in the valley, leave Łomża about an hour before dawn.
- Rubber boots and insect repellent are a must from May to September.
Official site: biebrza.org.pl