first
seem. It is indeed almost an invariable rule among all land birds.
With woodpeckers and kindred species, and with birds that burrow in
the ground, as bank swallows, kingfishers, etc., it is a necessity.
The accumulation of the excrement in the nest would prove most fatal
to the young.

But even among birds that neither bore nor mine, but which build a
shallow nest on the branch of a tree or upon the ground, as the robin,
the finches, the buntings, etc., the ordure of the young is removed to
a distance by the parent bird. When the robin is seen going away from
its brood with a slow, heavy flight, entirely different from its
manner a moment before on approaching the nest with a cherry or worm,
it is certain to be engaged in this office. One may observe the social
sparrow, when feeding its young, pause a moment after the worm has
been given and hop around on the brink of the nest observing the
movements within.

The instinct of cleanliness no doubt prompts the action in all cases,
though the disposition to secrecy or concealment may not me unmixed in
it

The swallows form an exception to the rule, the excrement being voided
by the young over the brink of the nest. They form an exception, also,
to the rule of secrecy, aiming not so much to conceal the nest as to
render it inaccessible.

Other exceptions are the pigeons, hawks, and water-fowls.

But to return. Having a good chance to note the color and markings of
the woodpeckers as they passed in and out at the opening of the nest,
I saw that Audubon had made a mistake in figuring or describing the
female of this species with the red spot upon the head. I have seen a
number of pairs of them, and in no instance have I seen the mother
bird marked with red.

The male was in full plumage, and I reluctantly shot him for a
specimen. Passing by the place again next day, I paused a moment to
note how matters stood. I confess it was not without some compunctions
that I heard the cries of the young birds, and saw the widowed mother,
her cares now doubled, hastening to and fro in the solitary woods. She
would occasionally pause expectantly on the trunk of a tree and utter
a loud call.

It usually happens, when the male of any species is killed during the
breeding season, that the female soon procures another mate. There
are, most likely, always a few unmated birds of both sexes within a
given range, and through these the broken links may be restored.
Audubon or Wils