Sea birds have runny noses. Do you know why?
The sea birds have a special hazard – excess consumption of salty water while feeding.
Excess of salt is poisonous. It leads to dehydration and unnecessary load on the kidneys.
The excess salt is disposed off by the special salt glands in the head of the bird.
These glands discharge highly concentrated salt solution into the bird’s nostrils to drip back into the sea.
This built-in-desalination plant is so efficient that the bird never needs a drink of fresh water.
The fresh water needed by the bird is extracted from the sea water itself.
Amazing Animal Kingdom 