How ducks, geese and swans see the world – and why this puts them at risk in a changing environment
How ducks, geese and swans see the world – and why this puts them at risk in a changing environment: The blue duck (Hymenolaimus malacorhynchos) is a species endemic to New Zealand. Graham Martin, CC BY-NC-SA Each year, millions of birds fly into power lines, wind turbines and the other man-made structures that litter the …
