These are Greater Flamingo (オオフラミンゴ) at Ueno Zoo (上野動物園). These Flamingo go about their business, and one begins to eat food from a provided space. This is a gift of mine to Wikipedia, in hires.
<a href="//commons.wikimedia.org/wiki/User:Nesnad" title="User:Nesnad">Nesnad</a>
<span class="int-own-work" lang="en">Own work</span>