Feeling blue? Well, I imagine it might be since it is the only one of its kind I was able to spot at Lake Merced.
As a matter of fact, it’s the only Ruddy Duck I’ve ever seen in my life. Period. A sky blue beak doesn’t even seem like a natural thing to me, but it is very much natural. Nobody painted the guy’s bill. I promise. And while the breeding male is very recognizable (like this one), the non-breeding male and the female could easily go unnoticed.