My back yard, black bird shaped object, traveled east to west, high rate of speed

I was in my pool on a raft looking at the sky, large clouds that day. Wind was 5-7 mph from the west. I saw a black object about 150 ft from the ground, traveling east to west against the wind , approximately 100 mph in a straight line until it flew behind a large tree out of sight. It had the sun behind it so I couldn’t make out much detail on my side. It was the size of a large bird like an eagle and shape was like a wing of a plane looking from the side , very aerodynamic. It shot through the sky in a very straight line neither going up or down from its flight path. No sound at all. No lights. Nothing like a drone , no wings or propellers that I could make out.