Ok, really red vents, but that’s not as good of a title. I saw quite a few Red-vented Bulbuls and Red-whiskered Bulbuls while in O’ahu. Unfortunately, that’s not a good thing because they are a fairly destructive invasive species (info here and here) in Hawaii.
I was constantly struck at how colorful many of the invasive species were. I guess with so few predators, you can be as colorful as you want.