Geronticus eremita
SUBFAMILY
Threskiornithinae
TAXONOMY
Upupa eremita Linnaeus, 1758, Switzerland. Monotypic.
OTHER COMMON NAMES
English: Waldrapp, northern bald ibis; French: Ibis chauve;
German: Waldrapp; Spanish: Ibis Eremita.
PHYSICAL CHARACTERISTICS
27.5–31.5 in (70–80 cm); 2.5 lb (1,280 g). Plumage is dark with
metallic green and purple gloss. Front portion of head is bare
(skin is reddish orange with black marks over the eyes), back
portion features a crest of dark feathers.
DISTRIBUTION
The species breeds only in three colonies in Morocco, all in
the Souss-Massa National Park. Formerly, the hermit ibis had
widespread
DISTRIBUTION
in Africa and Europe, but populations
dwindled due to loss of habitat and mass hunting in the seventeenth
century.
HABITAT
Rocky plateaus, high-altitude meadows and streams, and arid
or semi-arid plains within foraging range of riverbeds or ocean
beaches.
BEHAVIOR
Except for the habit of nesting on cliffs, the hermit ibis is a
typical member of its family. It is colonial, not given to loud
calls, and spends its non-breeding days wading in the shallows.
FEEDING ECOLOGY AND DIET
Primarily insects, larvae, spiders, worms, and small reptiles and
amphibians.
REPRODUCTIVE BIOLOGY
The species breeds colonially. Clutch size is usually two to
three eggs. Adults feed not only their own young but also the
young of other pairs from beak to beak. Incubation is 27 to 28
days, and the young are fledged after 46 to 51 days.
CONSERVATION STATUS
Critically Endangered. A captive breeding experiment failed to
save the Turkish population, leaving only the Moroccan
colonies. The hermit ibis has undergone a long-term decline
and now has an extremely small range and population. The
major reasons for the shrinkage of the species’ range include
agriculture, development, and hunting. In 2001, the World
Conservation Monitoring Centre estimated the entire population
at 220 birds in the wild, plus 700 in captivity.
SIGNIFICANCE TO HUMANS
No economic significance. In ancient times, the bird’s return
to the Euphrates River was a harbinger of spring, and was celebrated
with a festival.
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