Call your doctor if you experience double wigeon.
There were SO MANY wigeons at the pond that day. A lot of the males were making this whistling sound like a squeaky toy and making a big display of flapping their wings. Duck waving, I suppose you could call it.
The males’ heads also had this green iridescence, but I couldn’t capture it.
I saw a few dozen wigeons swimming in the pond as well. Some of them were swimming in male/female pairings, while some of the males were making whistling/squeaky noises and displaying their wings.