Several more journeys were made to this spot while the Discovery was in the south, generally in the spring; and the sum total of the information gained came to something like this.  The Emperor is a bird which cannot fly, lives on fish which it catches in the sea, and never steps on land even to breed.  For a reason which was not then understood it lays its eggs upon the bare ice some time during the winter and carries out the whole process of incubation on the sea ice, resting the egg upon its feet pressed closely to a patch of bare skin in the lower abdomen, and protected from the intense cold by a loose falling lappet of skin and feathers.  By September 12, the earliest date upon which a party arrived, all the eggs which were not broken or addled were hatched, and there were then about a thousand adult Emperors in the rookery.  Arriving again on October 19, a party experienced a ten days’ blizzard which confined them during seven days to their tents, but during their windy visit they saw one of the most interesting scenes in natural history.  The story must be told by Wilson, who was there: 

“The day before the storm broke we were on an old outlying cone of Mount Terror, about 1300 feet above the sea.  Below us lay the Emperor penguin rookery on the bay ice, and Ross Sea, completely frozen over, was a plain of firm white ice to the horizon.  There was not even the lane of open water which usually runs along the Barrier cliff stretching away as it does like a winding thread to the east and out of sight.  No space or crack could be seen with open water.  Nevertheless the Emperors were unsettled owing, there can be no doubt, to the knowledge that bad weather was impending.  The mere fact that the usual canal of open water was not to be seen along the face of the Barrier meant that the ice in Ross Sea had a southerly drift.  This in itself was unusual, and was caused by a northerly wind with snow, the precursor here of a storm from the south-west.  The sky looked black and threatening, the barometer began to fall, and before long down came snowflakes on the upper heights of Mount Terror.

“All these warnings were an open book to the Emperor penguins, and if one knew the truth there probably were many others too.  They were in consequence unsettled, and although the ice had not yet started moving the Emperor penguins had; a long file was moving out from the bay to the open ice, where a pack of some one or two hundred had already collected about two miles out at the edge of a refrozen crack.  For an hour or more that afternoon we watched this exodus proceeding, and returned to camp, more than ever convinced that bad weather might be expected.  Nor were we disappointed, for on the next day we woke to a southerly gale and smother of snow and drift, which effectually prevented any one of us from leaving our camp at all.  This continued without intermission all day and night till the following morning, when the weather cleared sufficiently to allow us to reach the edge of the cliff which overlooked the rookery.