"Long-range pollen transport across the North Sea: Insights from migratory hoverflies landing on a remote oil rig", Doyle et al. 2025
https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2656.70126
"Of 121 sampled marmalade hoverflies (Episyrphus balteatus), 92% carried pollen, with metabarcoding of 86 individuals indicating pollen from an average of up to eight plant species per individual (range: 1–14) and 102 species in total across all four events."