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 / White Stork (Ciconia ciconia) feeding on worm, Biebrza National Park, Poland
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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
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Mateusz Piesiak / Moose (Alces alces) standing up from kneeling position, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) standing up from kneeling position, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) standing up from kneeling position, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) portrait, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) stretching its legs, portrait, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) kneeling down on front legs, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) kneeling down on front legs, Biebrza National Park, Poland. April.
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Mateusz Piesiak / Moose (Alces alces) kneeling down on front legs, Biebrza National Park, Poland. April.
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Ewan Flynn / Icterine warbler (Hippolais icterina) perched on branch in rain, singing, Biebrza marshes, Poland. May.
Ewan Flynn / Aquatic warbler (Acrocephalus paludicola) perched on reed stalk among Sedge (Carex sp.) singing, Biebrza marshes, Poland. May.
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Ewan Flynn / Aquatic warbler (Acrocephalus paludicola) perched on reed stalk among Sedge (Carex sp.) singing, Biebrza marshes, Poland. May.
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Mateusz Piesiak / White-winged tern (Chlidonias leucopterus) pair, courtship display, male landing with a food gift for female, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Common greenshank (Tringa nebularia) in breeding plumage, walking through marshland, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Western yellow wagtail (Motacilla flava) male, perched on branch, singing, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Ruff (Calidris pugnax) walking among vegetation, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Northern lapwing (Vanellus vanellus) in flight, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Common redshank (Tringa totanus) pair, courtship display, male singing and flapping wings, female on the right, in breeding plumage, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Common redshank (Tringa totanus) foraging in shallow waters at breeding ground, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Northern lapwing (Vanellus vanellus) portrait, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Common redshank (Tringa totanus) wading through shallow water, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Black-tailed godwit (Limosa limosa) standing in grass, Biebrza National Park, Poland. April.
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Mateusz Piesiak / White-winged tern (Chlidonias leucopterus) pair, courtship display, male with a food gift for female, Biebrza National Park, Poland. May.
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Mateusz Piesiak / White-winged tern (Chlidonias leucopterus) looking for insects on water surface, Biebrza National Park, Poland. May.
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Mateusz Piesiak / White-winged tern (Chlidonias leucopterus) portrait, Biebrza National Park, Poland. May.
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Mateusz Piesiak / White-winged tern (Chlidonias leucopterus) pair, courtship display, male presenting female with nuptial gift, Biebrza National Park, Poland. May.
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Mateusz Piesiak / Lily of the valley (Convallaria majalis) hidden at the bottom of the forest in spring. Morning sun is lighting from behind. Biebrza National Park, Poland.
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Pal Hermansen / Flooded farmland, houses at edge of water. Near Biebrza National Park, North West Poland. April 2013.
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Pal Hermansen / Moor frog (Rana arvalis). Biebrza National Park, Poland. April.
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Pal Hermansen / Moose (Alces alces) portrait. Biebrza National Park, Poland. April.
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Pal Hermansen / Moose (Alces alces) feeding on twigs , close up of lower teeth, nostril and mouth. Biebrza National Park, Poland. April.
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Pal Hermansen / Moose (Alces alces) feeding at sunrise. Biebrza National Park, Poland. April.
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Pal Hermansen / Moose (Alces alces) at sunrise. Biebrza National Park, Poland. April.
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Pal Hermansen / Flooded farmland with scattered trees and houses. Near Biebrza National Park, North West Poland. April 2013.
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Pal Hermansen / Isolated woodland, surrounded by farmland with farm buildings. An example of habitat fragmentation. Near Biebrza National Park, North West Poland. April 2013.
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Pal Hermansen / RF - Stork (Ciconia ciconia) in flight, near Biebrza National Park, Poland. April. (This image may be licensed either as rights managed or royalty free.)
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Pal Hermansen / Moose (Alces alces), close up of ear and eye. Biebrza National Park, Poland. April.
