THE BIRDS OF THE BLACKWATER VALLEY. 259 I have an idea that we are not quite so wise as our ancestors in a knowledge of this peculiarity of the Redwing. There are still in daily use, or to be found in old books, a great number of names for the Redwing. And all of them seem to be connected with the "seep" note :—"Swinepipe" is perhaps the com- monest ; other variants are "Winepipe," "Windpipe," "Wing- pipe," "Winnard," "Windle," "Wind Thrush," "Wingthrush," and "Wheenerd" ; the Germans call the bird "Weindrossel." We to-day call it Redwing. Many a naturalist cannot tell a Redwing from a Songthrush, so similar are they except to the student of birds—yet so inscrutably dissimilar when we begin to look below the concealing mask of plumage. As with so many other birds, we should understand the Redwing much better if we ignored its feathers entirely. The skin is the binding : the living bird is the real book, its pages printed in uncouth characters in a strange tongue, hard to read, difficult to comprehend. After quite thirty years' close study I have yet to learn the real meaning of one simple monosyllable from this ordinary bird—and there are so many other comely volumes waiting to be read ! THE BIRDS OF THE BLACKWATER VALLEY IN 1922 and 1923. By WILLIAM E. GLEGG, F.Z.S. THIS note, the second on the birds of the Essex rivers, is prepared with the object of showing what species may be observed to-day in these localities. The late Mr. E. A. Fitch, in his guide to "Maldon and the River Blackwater," tells of the amazing wealth of bird-life at one time, apparently within the last fifty years, to be found in this part of the extensive Essex marshes. Some of his accounts are so remarkable that they may be repeated justifiably. "I have seen the sky darkened with wild geese covering a space of half-a-mile by a quarter-of-a-mile, as thick as manure spread upon the ground, and making a noise which I could only compare with fifty packs of hounds in full cry. I have also seen seven acres at low water covered with Widgeon, Curlew and Ducks, making such a noise that I could not hear my brother talking io me a few yards off. Colonel Russell was off the coast in his