The Canadian Environmental Sustainability Indicators (CESI) program provides data and information to track Canada's performance on key environmental sustainability issues. The Plastic particles in the Northern Fulmar indicator provides information on the mass of plastic found in the Northern Fulmars' stomach in birds collected in Canada. The Northern Fulmar is a seabird that feeds exclusively on the surface (top 1 metre) in the open ocean. The indicator reports the proportion of birds with 0.1 g or more of plastic in their stomachs and gives an overview of the situation at the national and the regional levels. Information is provided to Canadians in a number of formats including: static and interactive maps, charts and graphs, HTML and CSV data tables and downloadable reports. See the supplementary documentation for the data sources and details on how the data were collected and how the indicator was calculated. Canadian Environmental Sustainability Indicators: https://www.canada.ca/environmental-indicators Supplemental Information Environmental indicators, nature, wildlife, biodiversity, populations, migratory birds, species, ecological groups, Migratory Birds Conservation Act, birds, habitat conservation