"Though the males were now comparatively silent on the arrival of
their busy mates, I could not help observing this female and a second,
continually vociferating apparently in strife. At last she was
observed to attack this second female very fiercely, who slyly
intruded herself at times into the same tree where she was building.
These contests were angry and often repeated. To account for this
animosity, I now recollected that two fine males had been killed in
our vicinity; and I therefore concluded the intruder to be left
without a mate; yet she had gained the affections of the consort of
the busy female, and thus the cause of their jealous quarrel became
apparent. Having obtained the confidence of her faithless paramour,
the second female began preparing to weave a nest in an adjoining elm,
by tying together certain pendent twigs as a foundation. The male now
associated chiefly with the intruder, whom he even assisted in her
labor, yet did not wholly forget his first partner, who called on him
one evening in a low, affectionate tone, which was answered in the
same strain. While they were thus engaged in friendly whispers,
suddenly appeared the rival, and a violent _rencontre_ ensued, so that
one of the females appeared to be greatly agitated, and fluttered with
spreading wings as if considerably hurt. The male, though prudently
neutral in the contest, showed his culpable partiality by flying off
with his paramour, and for the rest of the evening left the tree to
his pugnacious consort. Cares of another kind, more imperious and
tender, at length reconciled, or at least terminated, these disputes
with the jealous females; and by the aid of the neighboring bachelors,
who are never wanting among these and other birds, peace was at length
completely restored, by the restitution of the quiet and happy
condition of monogamy."

Let me not forget to mention the nest under the mountain ledge, the