ETA: I’d love better definition of this video.
@petermorwood’s attention was drawn to “the little bird” that follows the boar’s piglet out of shot. The moment I saw it, I… wasn’t so certain about its bird-ness.
The branding (in Cyrillic) is no indicator of where the original video came from. I think it might be South American. Because I’ve seen small ground-hopping creatures going after cattle that way. But they weren’t birds. They were vampire bats.
Have a look here at a NatGeo short on them. WARNING: blood, tiny little bats, running after cows and biting them in the legs, etc.