This lighthouse sits on a point in the Kilauea Point National Wildlife Refuge on the island of Kauai. It common for red-footed boobies to build their nests on Crater Hill, shown here behind the lighthouse (see the photo below for a blow-up of the hill). The adults are white with black flight feathers, and their leges and feet are red. Since they’re mostly white, they are quite visible, even in the distance.
If you decide to do your own Google search for boobies, be careful what links you choose to click.