Remi Masson / Group of Black bullhead (Ameiurus melas) shoaling to protect themselves against predators, River Rhone, Rhone-Alpes, France, July.
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Bert Willaert / Composite image of American fish species introduced to Europe: Pumpkinseed sunfish (Lepomis gibbosus, left), Brown bullhead (Ameiurus nebulosus, right) and Eastern mudminnow (Umbra pygmaea, under), ph...
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Remi Masson / Shoal of Black bullhead (Ictalurus melas) in a lake. Alps, France
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Loic Poidevin / White stork (Ciconia ciconia) eating Black bullhead (Ameiurus melas) Vendee, France, July
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MYN / Krista Schlyer / Brown bullhead (Ameiurus nebulosus), Anacostia watershed, Washington DC, USA, April. Meetyourneighbours.net project.
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MYN / Krista Schlyer / Brown bullhead catfish (Ameiurus nebulosus) Anacostia River, Washington DC, April. Meetyourneighbours.net project
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MYN / Krista Schlyer / Brown bullhead catfish, (Ameiurus nebulosus) Anacostia River, Washington DC, April. Meetyourneighbours.net project
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Michel Roggo / Black bullhead / American catfish (Ameiurus melas) Europe
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Alain Ghignone/ BIA / Great Cormorant (Phalacrocorax carbo) with Black Bullhead (Ameiurus melas) prey, Piedmont, Italy
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Alain Ghignone/ BIA / Great Cormorant (Phalacrocorax carbo) with Black Bullhead (Ameiurus melas) prey, Piedmont, Italy
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Alain Ghignone/ BIA / Great Cormorant (Phalacrocorax carbo) with Black Bullhead (Ameiurus melas) prey, Piedmont, Italy
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Joel Sartore / Photo Ark / White bullhead (Ameiurus catus) portrait, Fish Conservation and Culture Lab. Captive, occurs in USA.
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Laurent Geslin / Two juvenile Kestrels (Falco tinnunculus) on a wall, hiding their faces in their wings. Paris, France
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Stephen Dalton / Greater kestrel (Falco rupicoloides) perched on telegraph pole, South Africa
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Wild Wonders of Europe / Geslin / Kestrel (Falco tinninculus) perched in roosting hole in stone building in the Vatican garden, Rome, Italy, March 2010
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Wild Wonders of Europe / Geslin / Kestrel (Falco tinninculus) in flight, Vatican garden, Rome, Italy, March 2010
John Waters / Sub-adult Kestrel {Falco tinnunculus} hovering in flight over farmland, captive, Somerset, UK.
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John Waters / Sub-adult Kestrel {Falco tinnunculus} hovering in flight, captive, Somerset, UK.
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John Waters / Sub-adult Kestrel {Falco tinnunculus} hovering in flight, captive, Somerset, UK.
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Gabriel Rojo / American kestrel chicks looking out of nest hole {Falco sparverius} Argentina
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Kim Taylor / Kestrel {Falco tinnunculus} in flight. Captive, UK.
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Tony Heald / Kestrel (Falco tinnunculus) female feeding on small mammal prey. Richmond Park, London, England, UK. December.
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Nick Upton / Female Kestrel (Falco tinnunculus) soliciting male to mate with her by crouching down on a cliff ledge near their nest site, Cornwall, UK, April.
