GOLDEN PLOVER

Everybody knows that birds migrate. In fact, people use the disappearance and then the re-appearance of certain birds as a sort of way of telling the change of seasons. But no one fully understands why birds make such long journeys.

We cannot explain it by difference of temperature alone. The feathery coats birds have could protect them very well against the cold. Of course, as cold weather comes there is a lack of food for the birds, and this may explain their flight to places where it can be found. But then why do they migrate north again in the spring? Some experts think there is a connection between the change in the climate and the breeding instinct.