I lost one of my 12 geese due to a neighbor's dogs. The dogs thought it was great fun to chase after the chickens, geese and ducks. I could not find out whose dogs they were but it was during the day and the geese were penned up. I leave them out now so they can at least seek the safety of the pond. Also, a friend had twelve geese and she lost ever one of them to a bobcat. The count kept going down so she started keeping them in the pen all day. At that point, she didn't know what was happening to them. She came home one day after work and a bobcat was jumping out of the pen (8ft) with a goose in its mouth. Later, she spotted two bobcats by the pen. The bobcats turned up on the side of the road, she bought more geese and they have not lost one since. I had a bobcat to take 11 of my ducks before I knew what it was. I addressed the issue. I had offered to take care of her bobcat issue but she declined my offer. Since we are near the city, we mainly see the coyotes and bobcats at night. I keep the area lit and an answer ready. If it is a predator, it will continue feeding in the area until the food supply is exhausted. You need to have the area checked for evidence. I don't intend to be negative but, unless a goose is sitting, I have never had one to wonder off. I hope I'm wrong in your case and they find their way back home.
Hammerhead