Many bird species travel thousands of kilometers every year to regions where they can find rich sources of food and where they can lay their eggs and raise their offspring. Allah refers to the flight of birds in a verse in Surat al-Mulk:
Have they not looked at the birds above them, with wings outspread and folded back? Nothing holds them up but the All-Merciful. He sees all things. (Surat al-Mulk: 19)
Many aquatic birds successfully make long-distance flights. This is a result of their strong body structure and to the communication between them. Aquatic birds communicate with each other while flying by means of singing and producing different sounds. This holds every member of the flock together even in the dark of the night, no matter how great their numbers.
Every member of the flock knows where the others are. Scientists suppose that water birds use the sun to reckon their location. Once they are close to their destination, they recognize certain marks. This is similar to your using certain streets and buildings to find your way home. Likewise, aquatic birds follow rivers, mountains and other landmarks. Some aquatic birds can fly without stopping night and day during their migration.
The skill in locating direction is peculiar to human beings, who have intellect. Man can locate direction by using some technical instruments or by the help of the sky. But, how do birds find their way? How can they make use of the sun’s position or of other signs?
It is Allah the Almighty Who bestowed this wonderful skill upon birds, and created a special communication system among them. Allah manifests His artistry in creation with all the characteristics and features He creates in living things. In the verse “Have they not looked at the birds above them, with wings outspread and folded back?" Allah draws our attention to birds’ flight. He wants us to reflect on these abilities He has bestowed upon birds. Thinking this way, we come across intelligent behavior and perfect bodily systems that creatures cannot possibly develop on their own. Reflecting on what we see, we realize that Allah teaches them what to do.
Then you should reflect upon such facts and share your thoughts with other people. Make sure they grasp Allah's exaltedness and that it is Allah Who created everything.