The nest, built mostly by the female, is a
swinging pouch about 6 inches long suspended at
the end of a branch up to 90 feet up. The nest
is woven of long plant fibers, vine bark, hair,
and sometimes yarn, is lined with hair, wool and
fine grasses. Four eggs, incubated by the
female, hatch in about two weeks. Both parents
care for the young who leave the nest in 12 to
The Bird Banding Lab web site reports that
between 1955 and 1997, a total of 82,331
Northern Orioles were banded. Of these, 748 have
been recovered, a recovery rate of 0.91%.
Banding studies show that Baltimore Orioles
are short to long distance migrants, and can
live up to 7 years in the wild, and up to 14
years in captivity.
If you should recover a banded bird, please
report the band number to the Bird Banding Lab
by calling 1-800-327-BAND.
Conservation Status and Economic Importance
The Baltimore Oriole’s diet consists of
caterpillars, webworms, gypsy moths, beetles,
ants, grasshoppers, aphids and other insect
pests. These birds play an important role in the
health of our forests by gleaning destructive
insects from trees. The diet also consists of
fruits and nectar, and they will readily come to
hummingbird feeders and halved oranges.
Although common, populations seem to be
declining across North America. Human hazards
such a collisions with buildings, towers, cars,
and windows certainly take their toll along with
loss of habitat in their wintering grounds.