It was the time of day that Yellow-eyed Penguins (Megadyptes antipodes) were coming back from the ocean with fish to feed youngsters waiting at the nest sites. One of them appeared directly behind another, and they stayed together for a while. They started calling, which is a salute to each other.
Otago Peninsula, New Zealand
Canon EOS 7D, Canon EF 400mm f/5.6L IS USM lens, 1/500, f11, ISO 400; handheld