In the previous Mishnah, we spoke about a bird chatat (sin offering) that was offered incorrectly and its ramifications. In this Mishnah, we'll talk about a bird olah (burnt offering) that was offered incorrectly.
The Mishnah says, “And he also squeezed out the blood in the way that the bird olah is supposed to be done, which is only squeezing and not sprinkling of the blood.” In that case, the korban (offering) is valid. What we're saying here is that if everything was done right, you're good. It's a way of introduction to the next part of the Mishnah.
But if the Kohen (priest) did the blood application of a bird olah in the normal way—he squeezed it out—but his kavanah (intention) was for a chatat, the korban is valid, but it won't count toward the owner's obligation. Like a regular korban.
If the olah was brought with an improper kavanah, then it continues; it's kosher. The service could continue with it. It's burned on the Mizbeach (altar), but we say the owner did not fulfill his obligation and has to bring another olah in its place.
This is different from the korban chatat that we spoke about earlier. When talking about korban chatat, if the kavanah was for a different korban, then the korban is pesulah (invalid). You can't even continue with the regular service of burning it on the Mizbeach. Unlike here. Here, a regular korban olah, which is the usual, which is the general rule, is kesherah (kosher), but it doesn't fulfill the obligation of the owner.
Did the blood application of the olah like the blood application of the chatat? The blood application of the chatat is normally both to squeeze and to sprinkle. So we can't mean that in this case, because then the korban olah would be valid. So what we mean over here is that he only did the sprinkling and not the squeezing.
So even though a normal korban chatat, like we just said, has both, he didn't squeeze the blood; he only sprinkled it. But his kavanah was correct. His kavanah was only for the olah. Or if he did the blood application in the normal way of a bird chatat and his kavanah was for a bird chatat. In this case, pesulah: the korban is invalid because the avodah (service) of squeezing out the blood is considered fundamental and essential for the bird olah. And it wasn't done.
In the second case, of course, the kavanah was wrong. But not only that, which wouldn't have been a problem on its own, but also the blood application, which was squeezing out the blood, wasn't done correctly.
The last case where a bird olah is invalid is when he did the blood application below the red line, when it's normally supposed to be above the red line for a korban olah of a bird. Even though everything else was done correctly, including the kavanot, including the blood application—he squeezed it—and he had the proper kavanah for the olah, in this case the korban is invalid because the blood of the bird olah has to be applied above the red line. If it was applied below the red line, the blood service was done incorrectly, and that's an essential part of the korban's validity. Therefore, even if everything else was done correctly, the bird olah is invalid.