The team are currently in Australia's Northern Territory, where mangoes are flowering in the tropical winter, investigating this question (see previous posts here). Collecting insects is the key to answering it. After an insect is collected, pollen is scraped off the body using scalpels and tape. The collected pollen is mounted on a slide and the pollen sample is checked in the lab to see how much and what kinds of pollen are present. The pictures below show research assistants Jim and Jeff working in the lab. The magnified grains are mango pollen at 160x magnification!