Enemies._--One great enemy of the birds, however, must be
guarded against--the domestic {232} cat. This can be done fairly
effectively by means of a cat-proof fence.

Gunners and cats having been eliminated, few other enemies of birds
need be seriously considered. Bird-catching Hawks are not often
numerous in the neighbourhood of cemeteries. Red squirrels are accused
of pilfering from birds' nests, and when abundant they may constitute a
menace.

Properly constructed bird boxes, wisely placed, have often proved a
means of increasing bird life to an astonishing degree; and they are
absolutely the only inducement to hole-nesting varieties to remain
during the summer in a cemetery from which all standing dead wood has
been removed. Even the strong-billed Woodpecker will not abide in a
region where the only trees are living ones, unless, perchance, an
artificial nest entices the resplendent and dashing Flicker to tarry.
Many a Bluebird, with its azure coat gleaming in the sunlight, visits
the cemetery in early spring. From perch to perch he flies, and in his
plaintive note can be detected the {233} question that every bird asks
of his mate: "Where shall we find a place for our nest?" In the end he
flies away. Therefore when the roses and lilies bloom the visitor is
deprived of the Bluebird's cheery song, for the little fellow and his
mate have departed to the neighbouring farm where they may be found,
perhaps, in the old apple orchard.

A few cents expended for lumber and a very little labour in the making
of a small box to be attached to the side of a tree or erected on a
post, are all that is needed to keep the Bluebirds where they can cheer
the hearts of sorrowing visitors. The tiny Wrens, whose loud bursts of
song are entirely out of proportion to their size, can be attracted in
summer to the proportion of two pairs or more to every acre.

It is a curious fact, of which I believe but little has been written,
that birds that build open nests may often be induced to remain in a
locality if attractive nesting material is placed within easy reach.

In many a cemetery Orioles could be tempted to weave cradles among the
swaying elm limbs if {234} strings and fragments of brightly coloured
yarns were placed where the birds could find them. Baron von
Berlepsch, whose experiments in attracting birds to his place in
Germany have been widely advertised, found that when the tops of bushes
were drawn in closely by mea