ID Help - white bird, grey wings

[Great Southwest]

Hi Folks,
I'm an outdoors person, but not a birder.  Still, a couple weeks back I encountered one strange looking bird and am asking anyone for a lead as to its ID.
The sighting was about 40Kms west of Point Pelee, only a few hundred feet from Lake Erie.  The bird was about the size of a robin.  It had a completely white head and the body looked mostly white, with grey wings.  I'm thinking he/she was only passing through, as never saw anything like that around here before.  Thanks for any ideas.

[Pat Hodgson]

snow bunting? or a leucistic robin?

[BetCrooks]

Although not identical, did you look at photos of Northern Mockingbird
http://www.allaboutbirds.org/guide/Nort ... ingbird/id
and Northern Shrike?
http://www.allaboutbirds.org/guide/Northern_Shrike/id
some terns also have a lot of white on the head while younger
http://www.allaboutbirds.org/guide/Common_Tern/id (click through to the photos of the younger ones)

Not sure what else to suggest off hand.

[Great Southwest]

What a great birding resource this site is.  Thanks for the leads Pat and Bet.  Could have been a leucistic robin from the photos I've viewed on line, though this bird's snow white body was  more extreme than any photos I saw, and note, eyes were not pink.  The photo I reviewed of a snow bunting had a shorter beak, ditto the tern, the Strike photo was of a puffier-looking bird than I saw, and the Northern Mockingbird was too grey, though it could have been a leucistic one too.
Johnny Winter was heretofore my only experience with albino characteristics.

Before I sign off, I'd like to mention that I have turned my half acre yard into one with no grass, but with trees, shrubs, groundcovers, and gardens and have noticed a lot more bird activity as yard has matured.  If anybody doubts it, I'm saying small scale habitat changes by home owners can make a huge difference and then you get to live really up close and personal with your feathered friends.  Now if those red-winged blackbirds would only stop dive-bombing the garden visitors...

[Rotarran]

It's tough to make a definitive ID based on the information you provided.  Can you give us more details?  Leg length and colour, bill length and colour.  Was the bird more like a song-bird or more gull-like or perhaps more shore-bird like.  Anything you can give us.  Even the way it flew or any peculiar behavioural characteristics you noticed.  

Here's a website I use from time to time when I struggle with ID, give it a shot, it might help.  Just make sure you're in "icon" view so you can see the thumbnail previews.  Good luck.
http://identify.whatbird.com/mwg/_/0/attrs.aspx

[Great Southwest]

I would like to thank Rotarran for even attempting to deal with a gardener.  Plants I can ID and relate to more. Songbird or shorebird?  Heck if I know. The sighting occurred as I was hiking thru a village, and it was the odd-ball appearance that caught my eye.  It was just hanging around, maybe jumping to another branch, in some low trees next to a ravine.  Leg length might be like a robin's, the dark beak too, black eyes, smooth feathers. I will try the suggested site, thanks, and I might go back and see if he's still there.