Page:White - The natural history of Selborne, and the naturalist's calendar, 1879.djvu/421

Rh very common with us; but I cannot make out the three different species of willow-wrens which he assures us he has discovered. Ever since the publication of his History of Selborne I have used my utmost endeavours to discover his three birds, but hitherto without success. I have frequently shot the bird which "haunts only the tops of trees, and makes a sibilous noise," even in the very act of uttering that sibilous note, but it always proved to be the common willow wren or his chiff-chaff. In short, I never could discover more than one species, unless my greater petty-chaps, sylvia hortensis of Latham, is his greatest willow wren.—.

FERN-OWL, OR GOAT-SUCKER.

The country people have a notion that the fern-owl, or churn-owl, or eve-jarr, which they also call a puckeridge, is very injurious to weanling calves, by inflicting as it strikes at them, the fatal distemper known to cow-leeches by the name of puckeridge. Thus does this harmless ill-fated bird fall under a double imputation which it by no means deserves in Italy, of sucking the teats of goats, whence it is called caprimulgus; and with us, of communicating a deadly disorder to cattle. But the truth of the matter is, the malady above-mentioned is occasioned by the œstrus bovis, a dipterous insect, which lays its eggs along the chines of kine, where the maggots, when hatched, eat their way through the hide of the beast into the flesh, and grow to a very large size. I have just talked with a man who says he has more than once stripped calves who have died of the puckeridge; that the ail or complaint lay along the chine, where the flesh was much swelled, and filled with purulent matter. Once I myself saw a large rough maggot of this sort squeezed out of the back of a cow. These maggots in Essex are called wornils.

The least observation and attention would convince men, that these birds neither injure the goatherd nor the grazier, but are