Hummingbirds, earthworms in your yard: Ask OSU Extension (Oregonian)

Hummingbirds, earthworms in your yard: Ask OSU Extension (Oregonian)
Earthworms are very beneficial to your lawn and in addition to supplying it with needed nutrients help to keep the soil aerated. The best advice that we can give you on this is to consider it nature’s way of adding nutrients and conditioning the soil. As the grass returns to its normal growing stage the mud piles should be hidden and your lawn look normal again. – Larry Sutton, Extension Master Gardener.