Object coasted overhead in complete silence and nearly invisible.

Clear night with perfect visibility and little to no wind. I was letting my dogs outside one last time for the night. As I was waiting I looked up, and from the corner of my eye I saw movement in the sky. I focused my attention to the object and noticed it was flying but I could not make out any details such as shape or size until it started to pass in front of stars. This object emitted no lights or sounds. The color perfectly matched the sky and so would have been invisible had it not been moving in front of stars. This is when I could see the silouhette of a boomerang or chevron shape. The object coasted steadily in a straight line until it left my field of view. I am an avid bird watcher, skygazer and am familiar with all aircraft types including drones. I am 32 years old and have never witnessed an aerial object I couldn't identity until this incident.