Quropeco can summon some insane shit in Multi I understand, way before you're supposed to fight it.
In single player, it's usually just Jaggi, yeah. The best thing to do in this case is either dung bomb quro or the other monster, or leave screen for a minute. One of the two will disperse quickly. If Quropeco has taken a beating, he'll fuck off soon, if not, the other monster will leave around the time they realize that Quropeco isn't another
Rathian or another Jaggi.
The trick to Quropeco is, yeah, fewer tail whips and the tail whips do less damage. He's also not nearly as dangerous as Yian Kut Ku was when enraged. the only really heavily damaging ability he has is his flint, and you can lower the frequency of the attack by busting his flints off, and if he's low on stamina he can fail to create a spark. It's also incredibly easy to dodge - there's a long lead up to the attack, even when he's enraged, and he can only attack in a straight line with it. When he starts clapping his flints together, run, dodge, or block.
I don't think you can sever his tail, so don't bother. Focus attacks on the wings to break his flints. If you need a strange beak, break the head, otherwise don't bother. Other than that, attacking his feet a lot will make him fall, the trip damage threshhold seems to be very low and you can put him on his ass constantly. As a lancer, at this point I usually aim for the center of the body and stampede, but you can also put down some barrel bombs and blow his shit up.