In spring you may see lots of little bees emerging from the ground or your lawn. The ones I find are little brown Early Miner Bees. First are groups of them zooming around. These are the males, who emerge first. Next come lone bees hunting around on the ground. These are usually the females looking for their nests, or good places to dig one. Or you may well find them in the trees, pollinating flowers.
This Miner Bee I found crawling around had a patch of white on its face. In many bee species, the males have a white patch, so I thought this was a male. Bug Guide confirmed: it’s a boy.
And here’s another one hard at work on pear blossoms. Miner bees only emerge for a few weeks and spend the rest of the year asleep in the ground. So whereever you find them, keep their patch of ground safe and undisturbed, and leave your miner bees alone!