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Rh more important matters. The flight out from the roosting-trees in the morning, and the flight into them again at night are—when it is not the breeding-season—the two daily 'events' of a rook's life. Here, then, are two subjects for special observation.

"November 30th.—At 3 I take up my position on the edge of a little fir-plantation, a short distance from where I watched yesterday and the last few days. My object is to watch the flights of rooks as they pass, and try to settle if each band has a recognised leader or not. Of course it is obvious that no one bird can lead the various bands, for these come from over a large tract of country, whilst even those that seem most to make one general army, fly, often at considerable intervals of time, and quite out of sight of each other.

"A good many are already flying in the accustomed direction, but singly, or wide apart. Each bird seems to be entirely independent.

"The first band now approaches. One rook is much in advance for some distance. He then deviates, and is passed by the greater number of the others, who continue on their way without regard to him.

"Another great, irregular, straggling body in which I can discern no sign whatever of leadership. Then comes another, more compact. A rook that at first leads by a long interval is passed by first one and then another, so that he becomes one of the general body.

"A large band, flying very high. Two birds fly nearly parallel, at some distance ahead.

"Two large bands, also very high. In each, one bird is a good way ahead. The apparent leader of