Andres M. Dominguez / Bacteria (Lepthotryx discophora) causing iridescent patterns and White willow tree leaf (Salix alba) in river, Sierra de Grazalema Natural Park, southern Spain, November.
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LYNN M. STONE / RF - Female Golden retriever standing by Fireweed flower, Chugach State Park, Anchorage, Alaska, USA. (This image may be licensed either as rights managed or royalty free.)
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LYNN M. STONE / RF - Female Golden retriever portrait, Chugach State Park, Anchorage, Alaska, USA. (This image may be licensed either as rights managed or royalty free.)
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Andres M. Dominguez / Bacteria (Leptothryx discophora) causing iridescent sheen on water surface with White willow leaf (Salix alba). Sierra de Grazalema Natural Park, southern Spain, November.
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Andres M. Dominguez / Bacteria (Leptothryx discophora) causing iridescent sheen on water surface with White willow leaf (Salix alba). Sierra de Grazalema Natural Park, southern Spain, November.
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Fabrice Cahez / White willow (Salix alba) catkin, Vosges, France, April.
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Nick Upton / Golden weeping willow (Salix x sepulcralis) catkins, Wiltshire, UK, April.
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Nick Upton / Golden weeping willow (Salix x sepulcralis) catkins, Wiltshire, UK, April.
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Markus Varesvuo / Golden Eagle (Aquila chrysaetos) juvenile feeding on Willow Grouse (Lagopus lagopus), Norway, November
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Markus Varesvuo / Golden Eagle (Aquila chrysaetos) juvenile feeding on Willow Grouse (Lagopus lagopus), Norway, November
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Markus Varesvuo / Golden Eagle (Aquila chrysaetos) juvenile feeding on Willow Grouse (Lagopus lagopus), Norway, November
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Markus Varesvuo / Golden Eagle (Aquila chrysaetos) adult eating Willow Grouse (Lagopus lagopus), Norway, November