Nature Notes From Crater Lake
Volume 13, October 1947
Booby Crows
By Dr. R. R. Huestis, Ranger-Naturalist
During three different summer seasons a
mother Clark's Crow,
Nucifraga columbiana, has arrived on Crater Lake rim with a full
grown but dependent young one. The 1942 pair, on which notes were taken,
kept close to the parking area, the mother availing herself of the food
offered by visitors and the young one calling incessantly to share in
it. This perpetual clamor during the first part of July interested many
people, most of whom appreciated the fact that they were observing a
somewhat uncommon episode in family relations although few realized how
unseasonal it was for a nutcracker to be feeding young that late in the
year. In the morning, the mother usually exhibited considerable patience
with her nagging offspring and fed it diligently. By afternoon, however,
she appeared distinctly weary of well-doing, fed only at long intervals,
and flew rapidly from one perch to another followed interminably by the
squawking young one. At times she would administer a weaning peck or two
which appeared to have little effect, and sometimes, when the
youngster's mouth was open, she would "feed him her bill clear down to
the gizzard," as one onlooker phrased it. This produced a sort of
choking gurgle in the young one and greatly pleased visitors who were
very tired of his clamor.
On July 13, 1947, the writer observed
four Clark's Crows on a table in the picnic area. One adult flew away
leaving an adult with two full grown and clamorous offspring. The mother
gleaned under the table for awhile, both young hopping after her with
hunger cries. She then fed one young by regurgitation, ate again
herself, and fed the second young crow in a similar manner.
Occasionally, the mother fed both young in succession without eating
between feedings. Both young accepted food with the typical feeding
reaction of throaty noises and quivering wings. On July 18, 1947, three
crows presumably the same trio, were in the camp grounds and going
through the same maneuvers. The young made no effort to feed themselves
when food was available.
To observe birds that nest, as a rule,
in March, feeding young in the latter part of July is sufficiently
unseasonal to be made a matter of record. In all three previous seasons
in which it has been observed, the phenomenon was confined to one
family. Data upon marked birds have shown that Clark's Crows return to
Crater Lake Rim for several years in succession so the observed adult
may have been the same bird. She may nest much later than modally or she
may rear an atypical second brood and bring one or more of them to the
lake. Another possibility is that in a related group of birds the
mother-young relationship is continued in time to a pathological degree
and we are observing the distasteful antics of the crow problem child.
In this connection, it may be recalled that problem children are an
excrescence of the higher classes, a group, amongst avians, in which the
crows belong. The idea should interest the philosopher who believes that
the larger social groups are merely extensions of family relationships
which were not, in themselves, particularly salutary. Other observations
of mother-young interactions similar to those described above would be
of interest in this connection.