What you saw in the video was direct pressure (or as Labradorks accurately notes... a direct correction.) That is NOT what happens in systematic
* e-collar training commonly used in the US and Canada. And I don't think this is well understood by the general public.
(What follows is not a polemic for the wonderfulness of e-collars. On the contrary, these tools are best used with indirect pressure... not direct correction... and for that reason, anyone who doesn't appreciate the distinction between the two, should NOT own or use an e-collar.)
Labradorks noted correctly that perhaps this dog did NOT know he shouldn't snag the bird from the lab. Things in the field are fluid and maybe the dog didn't understand the context or was confused. So we shouldn't hammer the dog for the jumping up to grab the bird. Agreed. But, that's all irrelevant in a systematic e-collar program, because the dog wouldn't be corrected for the break (leaving the handler's side to grab a bird.) His abandonment of SIT would be negatively reinforced. And the dog does know to SIT.
Arguments to the contrary are facile. We go to extremes to teach the SIT command in the training yard, in the house, on the street, in the field, around barn cats and house cats, live birds and dead birds, guns and duck calls, in rain, droughts, cold and sweaty heat, AND (importantly) on lead at the line in just this sort of situation. We go to extremes to be as sure as we can possibly be that the dog knows these basic commands, of which SIT is the most basic. Because we are reinforcing what the dog already
knows, we can use smaller, much more modest, much more precisely timed, instantaneous aliquots of negative reinforcement.
In the video, you saw the dog cringe and vocalize. That doesn't happen in a well applied systematic training program
**.
* By "systematic" I mean a predictable training sequence that TEACHES, REINFORCES and PRACTICES each skill. I don't mean e-collar use by Bubba-the-hunter or his better looking cousin the pro dog trainer.
** My 3 dogs get very sad when I pick up the car keys and don't take them on a ride with me. Their ears are down, they slink to their beds. They don't cringe and vocalize. They just aren't happy, perky, enthusiastic. When my dogs are nicked for breaking a SIT they don't cringe or vocalize. Their ears may be down momentarily. The nick may have made them sad for a millisecond. Or even for several seconds. Maybe for a whole minute. They don't get to decide whether they SIT or not. They don't get to decide when they ride shotgun to the store. My dogs are frequently disappointed, but never abused.
Blaze Loves His Kennel (ORIGINAL) Husky Says No to Kennel - Funny - YouTube