Not the Birdie he wanted

Some of you will already know that Richard Gent had his golf ball taken away by a crow last week.

So I thought I would check the rules and see what they are for this type of incident

I found this on the interweb, however if it is not correct I am sure someone will advise me accordingly

Rule 18-1 says that if a ball is moved by an outside agency (anyone or anything that isn't involved in your round, caddies excluded), the ball must be replaced at the spot where it was moved, without penalty. If the ball can't be found, but you know it was taken by an outside agency, you must put a different one in play.

You must also put your ball back in its original resting spot if it's struck by another ball.

If your ball is moved by a fellow-competitor or his caddie during stroke play, there's no penalty. If the ball is moved in match play, other than in searching for it, then the side that moved it receives a one-shot penalty. This includes a ball that's moved by an opponent who thinks your ball is in the way of his next stroke, even on the green. He needs your permission to move it.

What if a ball is moved, but you can't determine where it was moved from? Using Rule 20-3c, through the green (anywhere on the course except hazards, and the green and teeing area of the hole being played), the ball must be dropped as near as possible to the place where it lay. Same goes if it was in a hazard. But it must be dropped in that hazard. On a green, it must be placed, not dropped.