Life histories of North American wood warblers, Part 1 (of 2)Bent, Arthur Cleveland
Science
Life histories of North American wood warblers, Part 1 (of 2)
Bent, Arthur Cleveland
Birds -- North America; Passeriformes; Wood warblers
"At first the mother bird covered the young much of the time, as the
infant birds were fragile and the weather was cold and damp. Every few
minutes the brooding bird moved back on the nest far enough to feed the
nestlings regurgitated or digested food, and to cleanse the nest of
biting pests such as ants, which might endanger the lives of the baby
birds. The father bird sang gaily, far away and near at hand, throughout
the long summer day. When he came to the nest with food, he flirted his
tail, fluttered his wings, quivered all over and twittered very prettily
to his mate, who responded in like manner.
"He presented his first tender moths and juicy caterpillars to the
mother bird, who ate part of them, but the remainder she crushed and
mixed with digestive juices in her mouth and placed well down the
throats of the baby birds.
"The little ones were not many hours old before the male insisted on
presenting to them a few tidbits himself; and in a few days the parents
fed the young almost exclusively on fresh insect food, which grew larger
and tougher as the days went by."
She mentions two attempts of the parent birds to draw her away from
their young: "Once I accidentally flushed a brooding magnolia. The bird
disappeared into the underbrush, but soon attracted my attention to
herself by calling from the top of a second-growth fir, a few yards from
where her precious secret was concealed. Then she fell from branch to
branch, striking the boughs with a thud, like a dead weight, and dragged
an apparently helpless leg or wing over the ground, but always away from
where her treasures were hidden. On another occasion, when I visited a
family of magnolias that were quite ready to fly, the little ones
spilled over the side of the cradle into the surrounding grasses and
ferns. Both parent birds, with spread wings and tail, tumbled from all
the seedlings in the vicinity and trailed around in widening circles,
calling piteously. At last the male bird poised himself in air on
fluttering wings between me and a callow youngster, but the moment I
lessened the distance between us he vanished."
Henry Mousley (1924) recorded his observations on two nests of magnolia
warblers, and found that during a period of 15 hours, at one nest
containing very young birds, the male fed the young 34 times and the
female 58 times; the average rate of feeding was once in 9.8 minutes;
the female did all the brooding for a total of 6 hours and 19 minutes;
the faeces were eaten 9 times and carried away 17 times, about equally
by each sex.
Public-domain text, read in full here on John Shaqi.
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