Stephen Barnard demonstrates more of the aerodynamic properties of Idaho ducks:
Ben Goren recently commented on the iridescent colors in Mallard wings in a photo of mine you posted. Here’s a particularly fine example, I think, of green iridescent markings on a Cinnamon Teal wing [Anas cyanoptera]. This green marking is difficult to spot with the naked eye, although I’m pretty sure the female teal can see it.
Also, a pair of Mallard drakes [Anas platyrhynchos] taking off. The drakes are hanging out together in small groups while the females are tending nests, eggs, and ducklings. Typical. 🙂
I saw the first flotilla of Mallard ducklings today.