Black bird standing on top of head of resting common hippopotamus (Hippopotamus amphibius), Ngorongoro Crater, Tanzania, Africa
RF2C2YHTKBlack bird standing on top of head of resting common hippopotamus (Hippopotamus amphibius), Ngorongoro Crater, Tanzania, Africa
Hippos out of water, Ngorongoro Crater, Tanzania
RMW3981BHippos out of water, Ngorongoro Crater, Tanzania
Hippopotamus on water. Ngorongoro Conservation Area crater, Tanzania. African wildlife
RF2DBEHEPHippopotamus on water. Ngorongoro Conservation Area crater, Tanzania. African wildlife
Close up of bird walking on common hippopotamus (Hippopotamus amphibius), Ngorongoro Crater, Tanzania, Africa
RF2C2YH6GClose up of bird walking on common hippopotamus (Hippopotamus amphibius), Ngorongoro Crater, Tanzania, Africa
Hippo in Ngorongoro Crater, Tanzania
RM2JA8T1JHippo in Ngorongoro Crater, Tanzania
Hippopotamus looking into the camera with head on the back of another
RME8PBCXHippopotamus looking into the camera with head on the back of another
Hippos out of water, Ngorongoro Crater, Tanzania
RMTRP7EXHippos out of water, Ngorongoro Crater, Tanzania
Hippo (Hippopotamus amphibius) in fresh grass in daylight, Ngorongoro Crater, Tanzania
RF2A39J27Hippo (Hippopotamus amphibius) in fresh grass in daylight, Ngorongoro Crater, Tanzania
Side-view head shot of yawning Hippopotamus (Hippopotamus amphibius) in Ngorongoro Conservation Area; Tanzania
RFW6H8B4Side-view head shot of yawning Hippopotamus (Hippopotamus amphibius) in Ngorongoro Conservation Area; Tanzania
Hippos out of water, Ngorongoro Crater, Tanzania
RMTRP7EFHippos out of water, Ngorongoro Crater, Tanzania
Pair of hippos (Hippopotamus amphibius) in open, one with wide open mouth, Ngorongoro Crater, Tanzania
RF2A39J22Pair of hippos (Hippopotamus amphibius) in open, one with wide open mouth, Ngorongoro Crater, Tanzania
Landscape with lake, yellow-bark acacia (Acacia erubescens), reeds and a group of  Hippo (Hippopotamus amphibius) resting on the
RMEDC70YLandscape with lake, yellow-bark acacia (Acacia erubescens), reeds and a group of Hippo (Hippopotamus amphibius) resting on the