These are natural events that can speak to the question at hand as if it were a dream. If you are wondering about buying a specific new house, and an owl swoops by, that is wisdom brushing you on the shoulder. And, depending on which direction it came from, that can add more meaning, and so on. Some Native Americans see the owl as unlucky, in which case the answer is that they probably will not have good luck in that house. Each of us reads the signs with our own tool kit.
Geomancers can use daysigns to read the land they are working on.
One example is simulacra, or natural likenesses, which can be found everywhere - in branches, walls and in clouds. You look in to the sky and see a cumulus nimbus that has the shape of a four-leaf clover. Nature is talking to you. I am feeling more and more that skill with daysigns is a very important tool in the geomancer's bag of tricks. One immediate difficulty comes because each geomancer ends up with a slightly different list and slightly different priorities.