Chemical

• The supraorbital gland is used to deal with the salt the birds encounter from feeding on crustaceans. Like humans, these marine birds cannot have all of that extra salt in their bodies.
• This gland removes the sodium chloride from the bloodstream very efficiently. This gland is 5x more effective than the human kidney.
• The supraorbital gland is located above the birds right eye, and filters the salt out of the bird when it enters the body.
• The excess salt is secreted as a byproduct through its bill. This makes the bird appear to have a runny nose, and the bird may even sneeze to get rid of this excess salt.