This pair visits every day in the Spring time, they’ve visited at least 11-12 years now. I’m not certain it’s the same pair as 2 years ago momma duck toddled her 6 ducklings up from the creek to visit and have dinner. They often visit several times a day but are quite often found just sleeping in their pool relaxing. This is a very common occurrence here. I live next to a wetlands and creek so they have a home on the creek I’m sure. They just enjoy my quiet place to chill and have good food!