to keep her eyes open, and on her return to the nest she managed to convey to her mate the news that dogfish were about. It was information which that wary bird was not likely to forget.
Shortly after this incident the overworked parents were afforded a certain measure of relief, but in a form which was very bitter to them. One morning when they were both absent from the nest, and the nestlings, full-fed for the moment, sprawled comfortably in the sun, a slender, longtailed, grey-and-buff chicken hawk came slanting down over the crest of the cliff. Its swift, darting flight carried it low above the crowded nests of the cormorant colony, but, audacious slaughterer though it was, discretion kept it from coming within reach of the menacing beaks uplifted to receive it. The lonely nest of the black fisherman, however, left unguarded for the moment, caught its eye. It pounced like lightning, struck its talons into the tender body of one of the nestlings, despatched it with a single blow, dragged it forth upon the edge of the nest, and fell to tearing it greedily. A moment more and another of the nestlings would have been served in the same fashion; but just in the nick of time the black fisherman himself arrived. The hawk saw his ominous form shoot up over the rim of the ledge. With one thrust of its fine pinions it
