Joel Sartore / Photo Ark / Clark's grebe (Aechmophorus clarkii) head portrait, International Bird Rescue Center, California. Captive.
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Joel Sartore / Photo Ark / Clark's grebe (Aechmophorus clarkii) resting, portrait, International Bird Rescue Center, California. Captive.
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Joel Sartore / Photo Ark / Clark's grebe (Aechmophorus clarkii) head portrait, International Bird Rescue Center, California. Captive.
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Joel Sartore / Photo Ark / Clark's grebe (Aechmophorus clarkii) resting, portrait, International Bird Rescue Center, California. Captive.
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Joel Sartore / Photo Ark / A close up of a Northern fulmar (Pacific Race) (Fulmarus glacialis rodgersii) male's head. The animal looks around. International Bird Rescue, USA. Captive.
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Joel Sartore / Photo Ark / Northern fulmar (Pacific Race) (Fulmarus glacialis rodgersii) male profile. The animal is sitting down and looking around. International Bird Rescue, USA. Captive.
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Joel Sartore / Photo Ark / Mallard duckling (Anas platyrhynchos) chicks, aged four days, sitting together, International Bird Rescue, San Pedro. Captive.
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Joel Sartore / Photo Ark / Mallard duckling (Anas platyrhynchos) chicks, aged four days, sitting together and vocalising, International Bird Rescue, San Pedro. Captive.