fowl will swallow the ova and fry of trout. It must be understood that I am not here entering into the question whether all these are really so injurious; I am merely giving a list of the "dogs with a bad name."
Moorhens and coots are especially disliked because they are on or near the water day and night, and can clear off large quantities of fry. Grebes (di-dappers or dabchicks) are similar in habit, but less destructive because fewer. Ducks are ravenous devourers; teal are equally hated. The various divers which occasionally visit the streams are also guilty. Lastly, the swan is a well-known trout-pirate. Besides these, the two kinds of rat—land and water—have a black mark against them. Otter, pike, perch, heron, kingfisher, owl, moorhen, coot, grebe, diver, wild-duck, swan, teal, dipper, land-rat, and water-rat—altogether sixteen creatures—are killed in order that one may flourish. Although none of these, even in the south of England—except the otter—has yet been excluded, the majority of them are so thinned down as to be rarely seen unless carefully sought.
To go through the list: otters are practically excluded; the pike is banished from trout streams but is plentiful in others; so too with perch; herons, much reduced in numbers; owls, reduced; kingfishers, growing scarce; coots, much less numerous because not permitted to nest; grebes, reduced; wild-duck, seldom seen in summer, because not permitted to nest; teal, same; swan, not permitted on fisheries unless ancient rights protect it; divers, never numerous, now scarcer; moorhens, still fairly plentiful because their ranks are constantly supplied from moats and ponds where they
