Favicon/Blavatar not showing on RSS feed?

Hi there,

My blog is at http://www.thedailytransmission.com – I changed the header.php file for my theme to include a favicon.ico file that I uploaded. However, my feed at http://www.thedailytransmission.com/feed does not display that favicon and it will not show in Vienna, Newsfire, etc. Any suggestions would be greatly appreciated!

Thanks!
Brittany