Can man fly in the sky with the help of wings like birds fly?

It depends on what kind of 'wings' you are talking about. There are mechanical wings, like those of a jetpack, which man can use to fly (which costs thousands of dollars). Those are metal wings that do not move, but aid in the flight of humans. If you mean like organic wings, like those birds have, then man will never be able to fly, because our bodies are just to heavy, and our bones are too dense for flight.