I know we wont have this in vanilla Skyrim, (I think NPC companions are in though?) but I'm sure a mod or two will come along, as they always have. Though, none of them ever offered a bird of some type, sadly. But for some reason, I feel Skyrim would be perfect for an animal companion, more so than any past TES game. Maybe it's the Norse-like setting, I dunno. But I wants it!!
Anyway, thoughts? :]
P.S. as a general side note, I wasn't thinking about Fable when I made this poll (so much Fable hate on this forum haha). I'm just an old school fan of the Baldur's Gate series, where companions made up a good portion of the game experiences. However, due to the nature of TES games, having 4 or 5 humanoid companions doesn't feel right.. to me, anyway. It could to others though. But for me, having an animal companion feels fitting. Especially considering I always play as stealthy Ranger/Druid like characters. Animals go perfect with such classes. :]