Saw these Mallards Feb. 23, in Ramsey.
I was struck by their sapphire blue (rather than emerald green) heads, but I know that digital cameras sometimes 'see things in a unique way', depending how the light is hitting the subject. Especially something iridescent.
I did some Googling, and found a lot of people swear to have seen dark-blue-to-purple-headed mallards.
What say our local birding community?
Trick of the light, or a variant?