Homing instincts in feral pigeons

[photokev]

I have to confess a total ignorance of all things pigeons and really appreciate this board and all the help I've gotten!

When Homie takes flight out the window each day I realize that given she's a wild bird, she might not come back. (All though I have to confess I hope she always does!) Anyway, there's a tremendous wow factor when she does her laps around the building. She's basically a white bird with wings that look like they were splotched with a light mocha. From the bottom she looks like a white bird and when she's at full speed is just a white blur...

So my question is, can all pigeons be trained to race/home?