Here's a time-lapse video clip of the overnight action - you can see how restless Harlequin was, and at about 03:30 she started getting down to business.

At about 05:54, lamb #1 got a brother.

You can check on their progress over at LambCam

At 05:00, the alarm went off and I looked up at the laptop to see Harlequin showing signs of labour. I wasn't totally sure at first since she'd done quite a good impression the night before, but this time it looked a bit more serious and sure enough, at 05:08, lamb #1 arrived.

The lamb was up on its feet and trying to suckle within 15 minutes so everything looks good.

Fingers crossed there should be another one along shortly - keep watching!