Yeah, this effect is pretty strong. After staring at it a bit, the only way I found to 'break' it was by noticing that if I flicked my eyes towards a bird, ther

Yeah, this effect is pretty strong. After staring at it a bit, the only way I found to 'break' it was by noticing that if I flicked my eyes towards a bird, there was a brief period before the illusion kicked in. By constantly flicking my eyes between each bird, I was able to perceive them as moving linearly.