What does this mean - ducks

A few months ago I was leaving my house to take my grandson home. Across the street on the sidewalk were 2 ducks - a drake and it's mate. We looked at the ducks and drove on. This is not so unusual as there are ponds around my housing development. I hear ducks a lot but I have never seen them in the actual neighborhood. I took my grandson home, visited with my daughter, then went to leave. The house my daughter lives in was my old house. I lived in the house for 7 years. There are a few pools in the area but no water source at all. In all the years I lived in the house, I only saw squirrels. We were walking out the door and directly across the street on the sidewalk were 2 ducks - a drake and it's mate. I was completely shocked. How could this be? Even now it seems unreal. I'm not sure what this was telling me. Does anyone have any insight? J