Flamingoes are well known that they stand with one foot for a long time. One day, when I was walking around the birds section of the Wakayama Castle zoo, I came across a scene in which a flamingo was putting its head into the water. It was not a long time, but for some seconds but he was immersing his head many times. I wondered what he was doing that for.
Flamingoes at Wakayama Castle zoo
