The habit of migrating is not confined to birds. To some extent it is common to all animals that have to move about for food, whether they live in the water or upon the land. The warm south wind that sweeps northward in successive waves of bluebirds and violets, of warblers and buttercups, moves with a like magic power over the sea. It touches the ocean with the same soft hand that wakes the flowers and brings the birds, and as these return to upland and meadow, the waters stir and the rivers and streams become alive with fish. Waves of sturgeon, shad, and herring come in from unknown regions of the ocean, and pass up toward the head waters of the rivers and through the smaller streams inland to the fresh-water lakes.
Waves of herring, did I say? It is a torrent of herring that rushes up Herring Run, a spring freshet from the loosened sources of the life of the sea.
This movement of the fish is mysterious; no more so than the migration of the birds, perhaps, but it seems more wonderful to me. Bobolink's yearly round trip from Cuba to Canada may be, and doubtless is, a longer and a more perilous journey than that made by the herring or by any other migrant of the sea; but Bobolink's road and his reasons for traveling are not altogether hidden. He has the cold winds and failing food to drive him, and the older birds to pilot him on his first journey South, and the love of home to draw him back when the spring comes North again. Food and weather were the first and are still the principal causes of his unrest. The case of the herring seems to be different. Neither food nor weather influences them. They come from the deep sea to the shallow water of the shore to find lodgment for their eggs and protection for their young; but what brings them from the salt into fresh water, and what drives these particular herring up Herring Run instead of up some other stream? Will some one please explain?
From unknown regions of the ocean."
Herring Run is the natural outlet of Whitman's Pond. It runs down through Weymouth about three fourths of a mile to Weymouth Back River, thence to the bay and on to the sea. It is a crooked, fretful little stream, not over twenty feet wide at the most, very stony and very shallow.
"A crooked, fretful little stream."