Today I learned: Flamingos feed with their heads upside down and that their beaks are adapted for this purpose.  This essay on flamingo feeding from Stanford explains: In most birds a smaller lower beak works against a larger upper one. In flamingos this is reversed; the lower bill is much larger and stronger, and the [&]

https://boingboing.net/2020/09/08/watch-flamingos-filter-feed-un.html