Black Swift

While not actually rare, the Black Swift is one of the least commonly observed native North American avian species. This is because it nests at inaccessible high elevations usually behind waterfalls and spends its days high aloft where it is nothing but a speck in the sky. The most reliable place in the country to see a Black Swift is at Box Canyon Falls in Ouray, Colorado, where a pedestrian walkway has been constructed adjacent to the waterfall offering a chance to view nesting sites nestled in the crevices of the sheer rock face.