Yesterday I let out my chickens for a while at about 1pm. I came out again at 3pm to move the car and I saw all 7 of them walking around. When I came out an hour later I found 5 of them together and two missing. I looked for hours and I couldn't find them. I went out again today and their's still no sign of them. I live on a small farm with a large block of vacant land next door. I have had foxes on my farm, however only at night not during the day and not in the area around where my chickens stay. If there was a fox that got them during the day my dog would have reacted and she was calm and quiet during this time. Please help me find them as they are egg layers and this is very strange.