A century later 'good old White' published his account of the Swallow, to which the reader is referred as an admirable model of bird-biography, not only for the age, but as an authentic history full of fresh interest to the reader in all ages. The only point on which White had doubts was whether Swallows all migrate, or whether some of the young do not occasionally stay behind, and hibernate in hollow trees, holes of rocks, and the banks of pools and rivers. Individuals are said to occasionally remain, perhaps in consequence of having been disabled by accident at the season when the migratory instinct was in its active force, or from some other cause unknown to us. Several instances of such have been recorded by authors who, whether accurate observers or not, certainly believed that they were reporting truly. That they were seen only on warm days is of course no evidence that they had been roused from a state of torpor by the unusual warmth. Sunny days in winter tempt people to walk abroad and to resort to the same places which winter-gnats would choose for their gambols. Here, too, the stray Swallow would be found; but in dark stormy weather the gnats and the Swallow would stay at home, and the ornithologist would have little temptation to do otherwise. I happen to be myself among the number of those who on personal evidence believe that individual Swallows do remain in England long after the period of general migration. I was walking through a limestone quarry at Saltram on the bank of the Plym, in Devonshire, many years ago, on the twenty-fourth of December, when I saw a Swallow, whether a Chimney Swallow or Martin, I cannot positively affirm, wheeling about, and evidently hawking for gnats near the face of the cliff. The season was a mild one, the air still, and the sun shining brightly against the limestone rocks, from which much heat was reflected. That the bird had been kept in captivity until the migratory season had passed and then released is not probable. On any other supposition it must have remained either of its own free will, which is not likely, or from incapacity to accompany its congeners. Left alone it probably found a sheltered retreat in the face of the cliff, and sallied forth whenever the weather was inviting, making the most of the short days, and, on the finest, contenting itself with a scanty meal. The temperature of the west of England in winter it is quite able to bear; in fact, it is not uncommon there for a whole winter to pass without any weather so severe as that which has characterized the whole of the present April (1860), though Swallows have returned, and contrive to find food enough to keep themselves alive. If, therefore, the bird which I saw managed to live on till Christmas Eve, there is no reason why it should not survive the whole of the winter. But as 'one Swallow does not make a spring', so neither is one sufficient to upset a theory. There remains, therefore, the rule with the one exception to prove it, that Swallows do migrate. A full account of all that has since been learnt of the Swallow's history will be found in Yarrell's _British Birds_. For the sake of reference only I will add a short summary of what I may term its statistics. The Swallow is a migratory bird wherever it is found, that is in most of the countries of Europe, Asia, and Africa. The first Swallows arrive in this country about the eleventh of April, and are followed by others at various intervals, until the middle or end of May. On their arrival, they resort to those places which, being most sheltered, abound most in winged insects, these being frequently the courses of rivers and canals. As the season advances, they spread themselves more generally over the country, still, however, being most numerous in the vicinity of water. In May they build their shallow open nests of mud and straw lined with feathers, a few feet down a chimney, in an outhouse, a bell-tower, the shaft of a deserted mine, or any other place which is at once dry and dark, rarely in more exposed places. They lay four or five eggs, and rear two or three broods in a season. The young being, from the usual situation of the nest, unable to leave their nursery until they are fully fledged, require to be fed a long time, but they continue to be, partially at least, dependent on the parent birds for many days after they have learnt to hawk for themselves. The process of feeding is carried on while both old and young are on the wing; or the young, perched on the top of a house or the branch of a tree, receive in turn the morsels which their more skilful parents have caught for them.