I have recently been blessed by god

i have been visited on a number of occations by a white dove. It's extremely beautiful and i was wondering what it was doing in my garden?
I've also been visited by a Black Pigeon, i have honestly never seen one before, it has the most unusual colour combinations on it. Red for instance. My question is, why have they chosen to come into my garden today at a frequent rate? Although i really don't mind. In fact, it's a good thing.