A gosling has arrived!

On Tuesday evening, we detected a small crack in the egg but it was hardly distinguishable.  By the next morning it was a small hole that got bigger..

By lunchtime, it had pushed out of the top and was sitting with its bottom in the shell.  It was looking very wet and weak.  When it eventually pushed itself out, it couldn't properly stand and lolloped around in the incubator.  After a few hours, it looked much better - it had fluffed up and looked quite alert.