This Marine IBA is identified using both tracking data and seaward extensions around breeding colonies. It falls within the Canada Exclusive Economic Zone (EEZ) and the Atlantic, Northwest FAO ocean region. The site covers an area of 1283 km2 and is 22 km away from the closet coastline. The depth ranges from 0 to 198 m, mean annual sea surface temperature falls between 5.65 and 6.19 °C and mean annual chlorophyll-a concentrations found to range between 0.51 and 1.21 mg/m3.
3 species trigger IBA criteria at this Marine IBA. BirdLife analyses of tracking data estimates that 72000-213750 individuals of Sooty Shearwater (NT) from Kidney Island are present at the site during the Non-breeding (Jun-Sep) life-history stage. Seaward extensions around breeding colony; Witless Bay Islands include key near-colony areas for breeding populations of Atlantic Puffin (LC) 486000-615600 individuals and Common Murre (LC) 93000-220875 individuals.
BirdLife International (2021) Important Bird Areas factsheet: Witless Bay Islands - Marine. Downloaded from http://www.birdlife.org on 18/01/2021.