Phil Savoie / Sand Martin (Riparia riparia) in flight catching insects over the Madison River, Montana, USA. May.
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Phil Savoie / Reflection of Sand Martin (Riparia riparia) hunting Speckled mayfly (Callibaetis sp.) Madison River, Montana, USA, May.
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Phil Savoie / Sand martin (Riparia riparia) perched on wire, Madison, Montana, USA, June.
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Phil Savoie / Sand martin (Riparia riparia) in flight, hunting insects above the Madison River, Montana, USA, June.
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Loic Poidevin / Sand martin (Riparia riparia) feeding chicks on nest, Brittany, France, June
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Loic Poidevin / Sand martin (Riparia riparia) feeding chicks on nest, Brittany, France, June
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John Waters / Sand martin (Riparia riparia) about to grab swan feather on surface of River Wye to line its nest located nearby, Herefordshire, UK, May.
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John Waters / Sand martin (Riparia riparia) taking swan feather from surface of River Wy to line its nest located nearby, Herefordshire, UK, May.
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Pal Hermansen / Sand martins (Riparia riparia) chicks calling, begging for food, in nest, Norway, July.
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Loic Poidevin / Sand martins (Riparia riparia) group of three on barbed wire, Vendee, France, July
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Loic Poidevin / Sand martins (Riparia riparia) group of six on barbed wire, Vendee, France, July
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Jussi Murtosaari / Sand martin (Riparia riparia), at the nest, North Karelia, Finland, June.
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Cyril Ruoso / Barn swallow (Hirundo rustica) and Sand martin (Riparia riparia) perched, France.
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David Tipling / Sand martin (Riparia riparia) at nest in sea cliff, North Norfolk, UK, June.
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David Tipling / Sand martin (Riparia riparia) leaving nest in cliff, Salthouse, Norfolk, UK, June.
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David Tipling / Sand martin (Riparia riparia) feeding young in nest hole at colony in sandstone cliffs, North Norfolk, UK, June.
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David Tipling / Sand martin (Riparia riparia) leaving nest at colony in sea cliff, North Norfolk, UK, June.
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Markus Varesvuo / Sand martin (Riparia riparia) in flight over water, Uto, Finland, July.
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David Pattyn / Sand martin (Riparia riparia) sitting on wires during migration. Greece. May
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Dr. Axel Gebauer / Tibet Sand martin (Riparia diluta tibetana) on wire fence. Qinghai Nanshan, 3,500m above sea level, Koko Nor lake, Tso Ngonbo, Qinghai Hu, Qinghai Province, Tibet, Amdo, China
