It looks stealthy, but the underwing pylons and 90 degree fin angle are certainly not. 它看上去有隐身性,但翼下挂架和90度的尾角度就不是了。
I think the white underwing flash is more restricted on Sooty, but is very white and should contrast strongly against a darker body. 我认为翼下白色的部分灰水剃鸟应该会范围更小,而且与身体暗色的部分对比更明显。