Add more each night for a week or so. As your feeder gets regular visits, you can add sunflower seeds. Try leaving a light shining on the feeder to watch your furry night visitors from a window. Ashley B., Kentucky Ocean animals usually get most of their water from the food they eat. When their bodies take in too much salt from the food or from the water around them, they have to get rid of it.
Different animals do that in different ways.
The gland collects any extra salt that gets into the animal's blood. Sea birds have salt glands too. But they dribble the extra salt out through their noses. Because the climate there is all wrong. Bananas are tropical plants.