To the Little Busy Bee
/"How doth the little busy bee, improve each shining hour, and gather honey all the day from every opening flower!" — Isaac Watts 1674-1748
Scientists now know various pollinators have a preference for different-colored flowers. Honeybees, for example, are attracted to yellow and blue flowers; hummingbirds and butterflies to pink and purple ones.
Although honeybees have a preference, I have also found honeybees on pink, red, and purple flowers, especially mid-summer when little else was in bloom. Flowers will stop producing pollen when temperatures go above 90°F, leaving honeybees with limited pollen sources to take back to the hive.