lmao. this is all you'll need to know.
andd lain, falco especially is very vulnerable off stage, so if youre near the sides of the stage, throw him off, and he'll do something predictable. and you can wait at the edge to guard, or go for the shine.
Lmfao...Wtfplox? -Ignores the post.-
Anyway, I haven't seen a simple straight answer for both Fox and Falco.
Falco: As GoldKirby said, Falco's startup doesn't burn like Fox's. But it does, just not as wide as Fox's range is. Avoid hitting his lower chest, its around the area where it can burn if you get too close. Aim for the head of course, but no need to be precise.
~Try getting to Falco just before he starts charging his Firebird, Falco begins the ascent a couple frames quicker than Fox I think since its shorter ranged. Since you drop fast, make sure you start right when you get in range or 1/4~1/2 second before.
Fox: Simply put, Fox's goes further so its a bit tricky. But if you're in range, go for it, as long as its 1 jump away unless you use your 2nd jump to get closer to the stage AND your target. Remember Fox's shine in mid-air has a couple cooldown frames unless cancelled, so make sure you can FireFfox back.
~In short words, aim for Fox while he jumps back. Way before starting Firefox as possible. But if he starts it and you're already prepared for the jump, make it quick as getting burned while in a shine = bad. Aim for the head or the chest, as long as you get him in that shine sweetspot. (Bottom left and right)