1200-8 - European bison (Bison bonasus) bull walking in snow covered forest habitat in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-6 - European bison (Bison bonasus) bull, standing in snow covered meadow in February, with yellowhammer (Emberiza citrinella) flock in flight, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-9 - European bison (Bison bonasus) female with calf, standing on snow covered field in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-1 - Pine (Pinus sp.) tree plantation, late afternoon sunlight in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-10 - European bison (Bison bonasus) herd walking on snow covered field in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-11 - European bison (Bison bonasus) herd walking on snow covered field in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-3 - European bison (Bison bonasus) bull with radio tracking collar, standing in snow covered forest habitat in February, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1200-7 - Frozen wetland area in snow covered primeval forest habitat in February, Bialowieza Strictly Protected Area, UNESCO World Heritage Site, Bialowieza National Park, Podlaskie Voivodeship, Poland, Europe

1178-24192 - Poland, Podlaskie, Bialostok Fountain on illuminated town square, Poland

989-168 - Marsh marigolds (kingcups) (Caltha palustris) flowering on flooded Narew sedge marshes, Krzewo, Podlaskie, Poland, Europe

989-20 - White willow (Salix alba) tree with base of trunk almost chewed through by Eurasian beaver (Castor fiber), Narew marshes, Podlaskie, Poland. MORE INFO: Beaver activity is crucial in keeping Poland's ancient marshes open and free of encroaching bushes and trees and their dams also help to maintain high water levels.

989-39 - Farmer ploughing at edge of Narew marsh among carpet of Dandelions (Taraxacum sp.) in spring, Podlaskie, Poland.

989-16 - Eurasian beaver (Castor fiber) dam on drainage channel in Narew marshes, Podlaskie, Poland. MORE INFO: Beaver activity benefits much other wetland wildlife by helping to maintain high water levels in Poland's ancient marshes and swamp forests.

989-2 - White stork (Ciconia ciconia) adult collecting nest material on Narew marshes in spring, Podlaskie, Poland.

989-29 - Black alder (Alnus glutinosa) carr swamp forest edge in early spring, Biebrza National Park, Podlaskie, Poland.