The Yellow-Crowned Night Heron

The yellow-crowned night heron (Nyctanassa violacea), is one of two species of night heron in genus Nyctanassa. Unlike the black-crowned night heron, which has a worldwide distribution, the yellow-crowned is restricted to the Americas. Wikipedia

Or usually restricted to the Americas. 

Rachel travelled to photograph the rare sighting of this creature of the night when it was spotted in Belcarra Co Mayo. (News article –  Belcarra.ie )