Thematic Assessment of Pollinators, Pollination and Food Production by IPBES
"The assessment found that an estimated 16 per cent of vertebrate pollinators are threatened with global extinction - increasing to 30 per cent for island species - with a trend towards more extinctions."
"Although most insect pollinators have not been assessed at a global level, regional and national assessments indicate high levels of threat, particularly for bees and butterflies - with often more than 40 per cent of invertebrate species threatened locally."
IPBES, the Intergovernmental Science-Policy-Platform on Biodiversity and Ecosystem Services, conducted a two year assessment of existing pollinator research globally compiling the work of 77 experts. Here is a link to the brief if you would like to read more:
More info. available at this site: