Pip 1 & Pip 2!
This morning a small pip (or hole) was seen on one of the eggs at 8:25 am. Captured still images also hinted at a small hole on a second egg but it was hard to immediately confirm this.
At this time (1:21pm) we can clearly see that two eggs have pipped. Towards the end of the video you can briefly see one of the chick's bills protruding through the hole. Hatching is physically demanding for these chicks and it may be some time before they completely free themselves from their eggs.