Body approx 3cm in length. Wings and white legs don't match with a gisborne cockroch.
White-faced heron had caught the fish on the edge of the main estuary stream then took it into the wetland. Low tide.
Heron obs: https://inaturalist.nz/observations/46428238
Flatfish being eaten by a pied shag. Some stills from a video available at https://www.youtube.com/watch?v=5bfwfn_T048
Found amongst pine cones and deep leaf litter.
Found in a rock and tussock field at about 1800m - possibly the highest record for this species. Second photo shows the 3 supraocular scales. Assisting Mr Knox on a herp survey.