Using citizen science image analysis to measure seabird phenology by Edney, AJ, Danielsen, J, Descamps, S, Jónsson, JE, Owen, E, Merkel, F, Stefánsson, RA, Wood, MJ, Jessopp, MJ, Hart, T

“…Year-round monitoring also showed that Kittiwakes visited one of the lowest latitude colonies, Skellig Michael (51.8°N), during winter, whereas birds from a colony at similar latitude, Skomer Island (51.7°N), did not. …”