We saw Weka regularly on the whole track from Whariwharangi to Marahau (we didn't see any in thw hills between Anchorage and Marahau).
Three times we encountered Weka chicks:
1. At the beginning of Onetahuti Bay, where the boardwalk is wider and offers a view of the ocean, we saw a weka with three chicks.
2. At Tonga Quarry, near the huge concrete block, we saw one Weka chick.
3. Just after leaving Anchorage bay we saw a Weka with 2 - 3 chicks (they were gone too fast)
The picture is from the first sighting.