Bicycle detail

bike was parked in the backyard along with 3 more bikes. was working around midnight and heard something from outside but ignored it as thought it was my dogs in their kennels and thought it was the music in the background. one of my dogs is agitated so brought it out in the yard and noticed that the bikes were gone. yard gate was opened. they took 3 bikes initially but since two were locked together, they left two of the bikes outside and took the one reported here.