This hybrid doesn't seem to exist on inat. The female is pure Pateke, but the male has several mallard traits such as a grey tail, and a particularly green head.
yes, the grass held this bird.
eating its lunch
one of my favorite images of the trip, with the reflection in the sand.
Seen at Hutton's Shearwater colony at the head of the Kowhai River Seaward Kaikoura Ranges. Photos taken near the Hutton's Shearwater research hut.