Birds useful and birds harmful

by Ottó Herman; J. A. Owen

This much is certain that the principal food of the Rook consists of insects and grubs, which it gets not only from the surface of the earth, but also from beneath it, when the bird sees from the colour of the fading plant that a grub is gnawing at its root. This is the meaning of the uprooted plants; and why one flock after another so often visits the same cornfields. It is a sure sign that the wireworm or some similar pest is busy with its depredations. Here again the work of the Rook is a blessing.

There are neighbourhoods where the farmer makes a great fuss about a grain or two of wheat or maize, as if he must be ruined by the damage. I repeat that the bird has earned its few grains by its other work; indeed, without its useful services these grains would probably never have grown.

The lesson we learn then is as follows:—The Rook lives principally and preferably on insects, grubs and worms, and so long as these are procurable, it does not look for grain—therefore, the spring sowing should be performed as late as possible, when the insects have developed, and the Rook can find its natural food; in autumn the sowing should be done as early as possible while there are still some insects to be found. The further actions of this bird are protective, for it attacks the gnawing maggots that live in the ground. These facts can be verified by dissection of the bird, when the stomach is often found to be full of wire-worms.

None the less researches into the habits of the rook require to be more thoroughly worked out, and this must not be lost sight of.

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I asked a tenant farmer in our own Midlands his views on the subject of Rooks and the following, with some slight editing of my own, was what he sent me. I give it in full as although there may be some repetition of the foregoing statements, it has special interest as coming from one of our English farmers.

A recent writer from the sportsman’s point of view speaks of the Rook as “this black robber,” and he says that there is no practical difference of opinion as to the question whether his benefits outweigh his depredations. Now, as a farmer, I confidently affirm that he does much more good than harm. He will sometimes uproot vegetables in getting at the worms round their roots. It is true also that he often robs the nests of the pheasant and the partridge; but, as I could easily show, he does far more good to the general community by furthering the labours of agriculturists, on whom so much depends, than harm to the sport of our leisured classes.

A more social bird even than the gregarious starling, he flies in flocks, feeds in flocks, and builds in flocks. His everyday life may appear to be an uneventful one to the outside world, and most commonplace; yet it is full of adventure and of joy tempered with sorrows. Apparently a grave bird, he is brimful of humour and, at times, as full of play as a titmouse. Like all other links in the seemingly endless chain of nature, he is the victim of circumstances: without much ado he could count up his sincere friends, but his enemies are beyond his conception of numbers.

From his winter homing quarters he comes with his company during February to inspect the colony of breeding nests which he regards as his peculiar domain, going back as night approaches to his sleeping-place until all is ready for the family life to begin. Rookeries vary, of course, greatly in size; one may be as a city or large town, again there will be a village, and here and there a small hamlet. There are in my own fields one of about a hundred and thirty nests, one of sixty, one of eight, and another of four nests. Of these latter I have some views of my own. I believe them to be those of odd and outlawed individuals who follow the other companies hither, but are socially considered as pariahs. My nearest neighbours are those of the sixty-two-nest village, and my last census-taking records about sixty-two married couples and thirty-six or more odd or unmated birds. These are all, of course, adult birds, their numbers reckoned before the young were hatched out.

The odd birds may some of them be outlaws, as I said before, but the majority of them are not vagabonds by any means. They only happen to belong to that numerous enough class amongst humans—those who have been forced by some just cause or impediment into a life of celibacy. As the rook does not mate until it is nearly two years old, a number of the single birds are, therefore, simply lusty young bachelors. The few individuals whom I sum up as ne’er-do-weels or unfortunates—I know personally three of these at the present moment—are to be recognised by the shabby, neglected, and generally unkempt appearance of their plumage, and some other of the many outward signs of a past henpecked existence. I am ignorant of the life history of these; perhaps if we knew all about them we should look upon them as objects of pity rather than of reproach. Now and again I notice that a few old birds in our colony appear to be dissatisfied with everybody and everything; and imaginary grievances, political and social, often lead to a segregation scheme. This is how I have accounted for my hamlet of four nests. The general run of our odd, or celibate, birds is, however, good in character; they help in the building of the nests and even in feeding the sitting birds. For the wedded pairs April is a most trying time: if the season be a dry one, or frost sets in, food is scarce. Insects and worms are deep in the earth; the farmer is engaged in sowing his spring corn, oats, and barley. The rooks prefer a diet of insects, worms and grubs, but these are hard to get at times; the spring beans are just peeping through, and the sitting hen asks for food. The cock bird ventures too long in the beanfield, and as he skims over the hedge with a bean or two in his pouch a shot is heard; the faithful mate of the sitting bird is brought down to mother earth, and the farmer feels that he has one enemy the less. Personally I would not shoot a bird if you gave me a sovereign for it. The old bird may, and does, grieve, but the news of her loss is soon at the rookery, and her food is brought to her by a new mate. Thus there is a place taken in the rookery by one of our odd birds, and there is a bachelor less in the community. I have known many a bird die about this time through over-zeal—a slave to love and duty. If April prove seasonable and mild with showers, worms are plentiful, and the farmer’s gun remains in its place over the kitchen chimneypiece.