The flight of this species is powerful, extremely rapid, and wonderfully protracted. It passes along with a speed equal to that of any of the Duck tribe, and I believe can easily traverse the space of ninety miles in an hour. The whistling of its wings may be distinctly heard when it is more than half a mile distant. This statement may be found to be in contradiction to those of probably every previous writer, for it has been a general opinion, that the greater the extent of wing the more rapid is the flight, which is anything but correct. On flying from the water, they proceed for a considerable distance very low, not rising to any height until they have advanced several hundred yards. The only nest of the Golden-eye which I have examined, I discovered, on the 15th of June, on the margin of a small creek about eight miles from Green Bay. The female left it, probably to go in search of food, whilst I was sitting under the tree in which it was, thinking more of my peculiar situation than of birds of any kind, for I was almost destitute of ammunition, and bent on returning to my family, then in Louisiana. How exciting are such moments to the ardent observer of Nature! In an instant, hunger, fatigue, even the thoughts of my beloved wife and children, vanished; and in a few minutes I was safely lodged on the tree, and thrusting my arm into the cavity of a large broken branch. Nine beautiful, greenish, smooth eggs, almost equally rounded at both ends, were at my disposal. They were laid on some dry grass of the kind that grew on the edges of the creek, and were deeply imbedded in the down of the bird. Not being then aware of the necessity of measuring or keeping eggs, I roasted them on some embers, and finding them truly delicious, soon satisfied my hunger. While I was eating them, the bird returned, but no male was to be seen. Whether many of these birds breed within the limits of the Union I cannot tell. Dr RICHARDSON says they are abundant in the Fur Countries, and Dr TOWNSEND states, that they are plentiful on the Rocky Mountains and along the north-west coast of America. Of the changes which the young males undergo, nothing is known beyond the fact, that the young of both sexes resemble the adult female, until the approach of the first spring, when their general migration northward removes them from our observation.