Hi Lara
The 'live' feed seems to have stalled temporarily - this was one of the problems the ranger was having to constantly check when I saw it on TV this morning.

If you look down lower on the page to the thumbnail photos you can get a better idea of how the nests are (manmade) constructed to protect the chicks from predators. Given that this is park is located in Wellington city it's pretty amazing they survive at all.