Grzegorz Lesniewski / White-tailed Sea Eagle (Haliaeetus albicilla) standing in shallow water. Biebrza National Park, Biebrza Marshes, Poland, July.
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Grzegorz Lesniewski / Common Reed (Phragmites australis) on fire. Biebrza National Park, Biebrza marshes, Poland, July.
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Grzegorz Lesniewski / Portrait of a Wood Sandpiper (Tringa glareola) in water. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Black Grouse (Tetrao tetrix) displaying. Biebrza National Park, Biebrza marshes, Poland, April.
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Grzegorz Lesniewski / Eurasian Curlew (Numenius arquata) in wet grass lit by dawn light. Biebrza National Park, Biebrza marshes, Poland, May.
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Winfried Wisniewski / Eurasian Penduline-Tit (Remiz pendulinus) male on reed blade, Biebrza National Park, Poland
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Winfried Wisniewski / Eurasian Penduline-Tit (Remiz pendulinus) male looking out of nest, Biebrza National Park, Poland
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Winfried Wisniewski / Eurasian Penduline-Tit (Remiz pendulinus) male building its nest, Biebrza National Park, Poland
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Winfried Wisniewski / Ruff (Philomachus pugnax) male molting into breeding plumage, Biebrza National Park, Poland
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Winfried Wisniewski / Ruff (Philomachus pugnax) flock migrating, Biebrza National Park, Poland
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Grzegorz Lesniewski / White-tailed Sea Eagle (Haliaeetus albicilla) standing in shallow water. Biebrza National Park, Biebrza Marshes, Poland, July.
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Grzegorz Lesniewski / Bluethroat (Luscinia svecica cyanecula) calling. Biebrza National Park, Biebrza marshes, Poland, July.
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Grzegorz Lesniewski / Black Grouse (Tetrao tetrix) displaying. Biebrza National Park, Biebrza marshes, Poland, March.
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Grzegorz Lesniewski / Black-tailed Godwit (Limosa limosa) foraging in marsh. Biebrza National Park, Biebrza marshes, Poland, June.
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Grzegorz Lesniewski / Northern Lapwing (Vanellus vanellus). Biebrza National Park, Biebrza Marshes, Poland, June.
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Grzegorz Lesniewski / Black Grouse (Tetrao tetrix) displaying. Biebrza National Park, Biebrza marshes, Poland, March.
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Grzegorz Lesniewski / Wood Sandpiper (Tringa glareola) foraging in shallow water. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Wood Sandpiper (Tringa glareola) in shallow water. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Black-headed Gull (Chroicocephalus ridibundus) pair mating. Biebrza National Park, Biebrza marshes, Poland, June.
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Grzegorz Lesniewski / Black-headed Gulls (Chroicocephalus ridibundus) mating. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / White Stork (Ciconia ciconia) walking through water as a flock of waterfowl takes flight. Biebrza Marshes, Biebrza National Park, Poland, August.
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Grzegorz Lesniewski / White Stork (Ciconia ciconia) in profile. Biebrza Marshes, Biebrza National Park, Poland, July.
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Grzegorz Lesniewski / White Stork (Ciconia ciconia) feeding young. Biebrza Marshes, Biebrza National Park, Poland, August.
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Grzegorz Lesniewski / White Storks (Ciconia ciconia) foraging in water. Biebrza Marshes, Biebrza National Park, Poland, August.
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Grzegorz Lesniewski / Song Thrush (Turdus philomelos). Biebrza National Park, Biebrza marshes, Poland, March.
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Grzegorz Lesniewski / Fieldfare (Turdus pilaris). Biebrza National Park, Biebrza marshes, Poland, March.
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Grzegorz Lesniewski / White Wagtail (Motacilla alba alba) on woodpile. Biebrza National Park, Poland, May.
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Grzegorz Lesniewski / Garganey (Anas querquedula) male on water. Biebrza National Park, Biebrza marshes, Poland, April.
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Grzegorz Lesniewski / Eurasian Curlew (Numenius arquata) on grass. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Eurasian Curlew (Numenius arquata) on grass. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Eurasian Curlew (Numenius arquata). Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / Eurasian Curlew (Numenius arquata) carrying eggshell. Biebrza National Park, Biebrza marshes, Poland, May.
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Grzegorz Lesniewski / White Wagtail (Motacilla alba alba) perched on a post. Biebrza National Park, Poland, May.
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Grzegorz Lesniewski / Elk (Alces alces) in misty morning light. Biebrza Marshes, Biebrza National Park, Poland, July.
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Nick Upton / Dandelions (Taraxacum officinale) carpet pastureland on Biebrza marsh after the retreat of spring floods, Biebrza National Park, Podlaskie, Poland, May 2008.
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Nick Upton / Mute swan (Cygnus olor) on flooded Biebrza marshes at sunrise in spring, Biebrza National Park, Podlaskie, Poland, April.
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Nick Upton / Traditional fisherman's punt moored at margins of Biebrza river alongside pastureland carpeted with Dandelions (Taraxacum officinale) after the retreat of spring floods, Biebrza National Park, Podlask...
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Nick Upton / Cumulus clouds reflected in flooded grazing marsh in Biebrza National Park, Mscichy, Podlaskie, Poland, April 2008.
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Nick Upton / Rolls of hay in flooded sedge marsh with flowering Marsh marigolds / King cups (Caltha palustris), Biebrza National Park, Zajki, Podlasklie, Poland, April 2008.
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Nick Upton / Fisherman silhouetted angling from traditional punt as the sun rises over the Biebrza river and marshes, Biebrza National Park, Podlaskie, Poland, May 2008.
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Nick Upton / Sun rising over flooded Biebrza marshes, with a single Mute swan (Cygnus olor) swimming near reed beds, Biebrza National Park, Podlaskie, Poland, April.
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Nick Upton / Common crane (Grus grus) nest with eggs in alder swamp, Biebrza National Park, Poland
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Nick Upton / Common crane (Grus grus) eggs on nest in Alder swamp, Biebrza National Park, Poland
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Winfried Wisniewski / Ruff (Philomachus pugnax), Biebrza National Park, Poland
