Squash bees are solitary and nest in the ground, where females lay eggs and store provisions of squash pollen for their developing offspring, which overwinter in the ground. While female bees of many species have special pollen-collecting hairs on their legs or abdomens, most males lack these hairs, and are typically inefficient pollinators. Male squash bees, on the other hand, are excellent pollinators without being hairy. Male squash bees spend all day and night inside squash flowers, sleeping, drinking nectar, and waiting for females to come collect pollen. With all that time spent inside the flowers, pollen is eventually transferred from male to female flowers, completing plant pollination. Once pollination is completed, the plant will begin developing fruit that will ripen into the mature squashes we love to eat.