Opening a public page from browser works fine.

Downloading same page using WebClient throws - (403) Forbidden.

What is going on here ?

Here is quick copy/paste example (used on console app) to specific page on web:

        try
        {
            WebClient webClient = new WebClient();
            string ss = webClient.DownloadString("http://he.wikisource.org/wiki/%D7%A9%D7%95%D7%9C%D7%97%D7%9F_%D7%A2%D7%A8%D7%95%D7%9A_%D7%90%D7%95%D7%A8%D7%97_%D7%97%D7%99%D7%99%D7%9D_%D7%90_%D7%90");
        }
        catch (Exception ex)
        {
            throw;
        }