seen on clear night moving under power, exhaust visualized as it maneuvered beside my house, its size was like small 'Drone' 14 inches?

Note…….. This object appeared on my infrared security camera.   After a minute of flying next to my Duck enclosure the ducks woke up and ran to the far side of enclosure when it came into view.    (friend) Archeologist for the city of St Augustine before retiring viewed the footage of the anomaly and examined a river rock I had found in the area.
The river rock which I have in my yard on the opposite side of the house and are naturally Brown yet this piece was black all through. Carl thought it had possibly been exposed to extreme heat.  There were also some markings/lines in my concrete which appeared after the event (which I ignored at first) But then an article appeared on the internet which showed similar markings. (the caption read…….. It said these lines/markings had finally been deciphered after 70 yrs.)
I am unable to attach videos or photos to computer sorry (I am 80yrs) but I can send you the photos/videos via text message if you provide a #.
There are other paranormal events here on my property all captured via my infrared cameras.   Please don't hesitate to contact me. But I do not want any publicity at my age.
Thank you.