Part 26

The eggs, oval in shape and pure white like those of all Owls, are laid without any attempt at a nest. They are generally laid in clutches of two, at intervals of some days, so that four or six young of varying ages are generally found in the nest together. Unlike most of the other Owls, the first plumage of the young is composed of true feathers, whereas in most of the other species the young are at first clothed, with the exception of the wings and tail, in a plumage of downy feathers, which after being worn for a short time is exchanged for the full plumage.

The general colour above is buffish orange, minutely speckled and vermiculated with grey. The under parts are white, sometimes slightly buffish on the chest, and with a few minute black specks. The sexes are alike, but the female is said to be more speckled on the under parts. The young resemble the adults. Length 13·5 in.; wing 11·25 in.

THE LONG-EARED OWL Asio otus (Linnæus)

Though it is distinctly commoner in Scotland, this species is not rare in any of the wooded districts of our islands. It is very partial to fir woods or evergreen plantations, and early in the year takes possession of an old nest or squirrel's drey in which to deposit its six white eggs. The young are chiefly fed on rats and mice, but moths and beetles are also eaten with relish, while small birds are not despised. The daytime is spent among the branches of the trees, and when alarmed by any noise the bird draws itself up and leans against the trunk of the tree, in which position it may easily be overlooked. It flies out at dusk and ranges the fields near woods for its prey.

In the northern parts of Scotland it is a regular migrant, but elsewhere within these islands it is resident, though immigrations from the Continent occur every year. It is a very silent bird, but occasionally gives rise to a short mellow bark.

The sexes resemble each other and are buffish, heavily speckled and vermiculated with dark brown, ashy, and white. The markings of the young are yellowish, and warmer in tint. The name is derived from two longish tufts of feathers above the facial disc, which can be erected at will. Length 14 in.; wing 11·5 in.

THE SHORT-EARED OWL Asio accipitrinus (Pallas)

Unlike the preceding species, this bird inhabits fens, marshes, and open moorlands. In Scotland it nests fairly commonly, but in England it is decidedly rare and local as a breeding species, while it has never been known to breed in Ireland.

The nest is placed on the ground, at the foot of a small bush in long sedge, or among heather. No real nest is made, but a few bits of grass or heather are arranged round the eggs. These are usually five in number, and, like all Owls' eggs, pure white. In some seasons these Owls become much more abundant in certain places, due generally to a great increase in their food, which consists almost entirely of field-voles. In the years when these voles increase to an enormous extent, this species will also appear nesting in considerable numbers, where it was almost unknown before, and in such seasons as many as twelve eggs have been found in a clutch. It is by no means a nocturnal bird but takes its food by day, and may thus be easily noticed on its approach in a new locality. The flight is somewhat heavy and uncertain, frequently twisting about and rolling from side to side.

In autumn, large immigrations reach this country from abroad, and during the winter it becomes quite common in suitable places throughout England and Ireland. He is frequently flushed from the turnip-fields in October, and is for this reason known in some places as the "Woodcock Owl."

In plumage it resembles the preceding species, but the markings are bolder and the delicate grey vermiculations are entirely absent. The ear tufts are much shorter. Length 14·5 in.; wing 12 in.

TAWNY OWL Syrnium aluco (Linnæus)

The Tawny Owl is a common inhabitant of the well-wooded parts of England, Wales, and Scotland, though in the north of the last-named country it becomes decidedly scarce and local. In Ireland it has not yet been obtained. It nests early in March, the eggs being usually placed in a hollow tree, though it often makes use of deserted nests of Rooks, Crows, or Hawks, and sometimes nests on the ground at the base of a tree. The eggs are white and glossy and much rounder in shape than those of the Barn Owl. It is extremely nocturnal, never appearing till quite dark, and seldom pursuing its prey in the open, but keeping to glades and rides in the woods. Its hoot is a loud "hoo hoo," and is repeated with great frequency. This species is never met with on migration, but is one of the most resident of birds, rarely wandering far from its birthplace.

The sexes are alike, except that the female is slightly larger. The general colour is usually of a warm tawny brown, mottled and streaked with darker shades of the same colour; the under parts are pale buffish white, striped with dark brown. There are two phases of this species which are alike in markings, but in one the predominating tint is red and in the other grey. Length 15 in.; wing 10 in.

TENGMALM'S OWL Nyctala tengmalmi (J. F. Gmelin)

This species is an inhabitant of the pine forests of Northern Europe, migrating southwards in winter. A few stragglers have occurred in these islands from time to time. The general colour above is umber brown, spotted and marked with white; the facial disk is white with a dark outer ring; under parts whitish, barred and streaked with brown. Length 9 in.; wing 6·5 in.

The plumage of this species is exceptionally thick and downy; the feathers on the legs and toes especially so.

THE LITTLE OWL Athene noctua (Scopoli)

This bird has undoubtedly occurred on many occasions as a straggler in this country, but its claim as a British Bird now rests on introductions which have been made in Kent, Northampton, Bedford, Yorkshire, and other places where it has more or less established itself as a breeding species, and is slowly extending its range from at least one of these centres. It is a small species, living chiefly on insects and mice, and is generally found in well-wooded country, where it may be often seen sitting on a dead tree or post, sunning itself, for it is largely diurnal in its habits.

The plumage above is a warm brown spotted with white; under parts white striped with brown. The female is rather larger than the male. Length about 9 in.; wing 6 in.

In this species the feathers on the legs and toes are quite short, being little more than bristles on the latter, a point by which it may be easily distinguished from the preceding species.

THE SNOWY OWL Nyctea scandiaca (Linnæus)

The Arctic regions both in summer and winter form the home of this large and handsome species, though many wander southwards during the winter months.

In the Shetlands and Orkneys it is a fairly regular winter visitor during severe weather, and it has frequently occurred in Scotland; to England and Ireland, however, its visits are few and far between.

The plumage is pure white, spotted and barred with dark brown, the amount of which varies greatly in individuals. Length of male 22 in.; wing 15·5 in. The female is slightly larger.

THE HAWK OWL Surnia funerea (Linnæus)

The Hawk Owl inhabits the pine forests of Northern Europe, Siberia, and North America. It has occurred here as a straggler on several occasions, the majority of examples having been shot in the western counties of England and Scotland, and belonging curiously enough to the American race, which has the bars of the under parts more ruddy than the European form. This latter form has, however, also been obtained on at least one occasion.

The upper parts are brown, spotted with white; under parts white barred with greyish or reddish brown. Its most characteristic feature is the tail, which is long and graduated, barred and tipped with white. Length about 15 in.; tail 7·5 in.; wing 9·2 in.