Tiny bubbles forming a flight formation — spotted by infrared cameras - note: 00:10 & 00:59 & 1:37

00:10 Tiny bubbles flight in cycle 00:59 Tiny bubbles flight from a spot at top-right 01:37 Tiny bubbles flight from a spot at top-right 01:51 Tiny bubbles flight from a spot at top 02:00 Tiny bubbles flight from a spot at top 02:18 daylight broke All caught on cow-watching infrared cameras! Check out these tiny bubbles mysteriously arranging themselves into a flight formation. what are the tiny bubbles?