agapeto writes: One thing which puzzles me is what is the explanation for kiwi bird's wings - they are so tiny and do not seem to have any use, or that could use it in future. How do you explain it best? |
This question seems to imply that you expect all aspects of every creature to have a current, or future use.
Why would you expect such a thing?
We have things in our own human bodies that are unrequired - like the human tail-bone.
What's the use for us to have a tail bone? What's the future use?
There is none, currently - and evolution doesn't "plan" for the future, it adapts to the present.
We have a tailbone because we evolved from mammals that used to have tails.
It doesn't need a current or future use.
Same with the kiwi bird's wings.
The kiwi bird has wings because it evolved from birds that used to have wings.
It doesn't need a current or future use.
If you think a current or future use is required - that's simply an incorrect assumption about evolution and reality.