Bees are pretty unique in that they are almost completely dependent on flowers to survive and reproduce, and a major part of the latter is due to pollen. Most bees provision pollen for their young and by sampling the pollen they carry we can gain a better understanding of the types of plants they use and the species most important to developing young. To help identify that pollen, we collect samples in the field and build a reference pollen collection to compare to samples back in the lab.
Here's a few thoughts, observations, and just cool entomological things to share. Enjoy!