Sarah McDonnell's work is influenced by the coastline of Portrane where she grew up, focusing specifically on the wildlife and habitats at the Rogerstown Estuary. Roghnú Nádúrtha (Natural Selection) is a fiction-based outlook into the future of the waterfowl in the area and depicts how they are affected by the coastal erosion and human interference with coastal pollution. Roghnú Nádúrtha is a museum-type archive depicting futuristic new species of birds that have had to adapt to the changing conditions in a factual based manner. The work and research is an ongoing study.