Such were the thoughts which passed through my mind as I stood on the top of the knoll.  I had not been there many minutes before I recollected how clearly I had seen Red Squirrel in the same position against the sky.  Instead, therefore, of remaining upright, I stooped down until I reached a thick bush, behind which I crouched, as well able as before to see any objects moving in the plain below.  At last I thought that it was time to go back to Alec, and was on the point of descending the knoll, when I fancied that I saw some objects moving along the ground.