Night Birds in Poland (1 Viewer)

[Uncle Duke]

I am a retired aerospace engineer in Dayton, Ohio, USA. A friend sent me the attached infrared video shot over Kielce City, Poland a couple weeks ago at night claiming it showed a group of "UFOs." He pointed out the "objects" could not be seen with the naked eye, and were visible only with the infrared system. After watching the flight patterns, and knowing an infrared system would detect their body heat, I suspect these are birds.

Do these look like birds to you? If so, what species might we be looking at?

Thanks for the help.