How did birds develop the ability to fly? According to what we have learned so far, this ability should have come about as a result of Natural Selection and survival of the fittest. |
Let's suppose that many millions of years ago there were bird-like animals that could not fly. Over time, some of them developed the ability to hop around and possibly even glide short distances. This ability gave them a clear advantage over others in their flock. They could more easily escape enemies, find food, etc. Because more of them survived, their babies inherited the ability to hop and glide. Just like you might inherit the ability to slamdunk a basketball or to do gymnastics. |
Now let's suppose that in the next generation of birds, a few of them could glide a little further and a little higher. Again, because they can get away from predators more easily, more of them survive to reproduce, meaning that more of the baby birds will inherit the ability to glide further.
Eventually over millions of years, birds became very skilled flyers, from eagles to humming birds.
No comments:
Post a Comment