Great White Pelicans Pelecanus onocrotalus are floating fishnets.The sack of membrane slug between the rims of the lower jaw inflates to an enormous ten-litre capacity when dragged under water.How the bird can even swim with it distended and full of water is a mystery.But clearly the system works.Odd bills seem to run in the family:DNA affinity testing reveals that the pelican’s cousin is the Shoebill Stork.
They fish in flotillas of up to 20 birds swim along in a oblique formation.That is the reason why you always see white pelicans in groups swimming at Lake Nakuru.
Wolf's Birding and Bonsai Blog 