Not necessarily. This is a woodland area. If they saw it through the trees, they might not have gotten a chance to see much more of it than the mask. [That's the one part they have to have at least glimpsed to be arguing over whether it was this specific variety, but any other details are in the air.

Keeping an eye on both of the other two even as he looks over the trees as well, Shun tries to focus on noises more distant than the sounds of birds. It's incredibly annoying to get his attention snapped by another flash of wings before his instincts die down and he can properly register that it's a harmless noise, but after a few more moments of walking, he can hear a faint, scratchy sort of sound very distantly.

He doesn't outright pause, but his eyes narrow, and he tilts his head in that direction - it's somewhere ahead and to the left.]

I hear scratching. It's far off, though.