DISTRIBUTION and HABITAT:
Crested Pigeons are quite abundant and can be found
in most of Australia except in the areas of heavy
rainfall. The preferred arid habitat is an open woodland
containing shrubs, trees and is within easy flying
distance to surface water. They tend to spend most
of their time on the ground yet nest and shelter in
trees.
BEHAVIOR:
Crested Pigeons are usually seen in pairs but may
also occur in flocks of thirty to up to a thousand
or more. Whenever they come to water, which is usually
a half hour after sunrise, they hesitate. They make
distress calls until a brave bird inches its way out
to the water. As soon as that bird proves the situation
to be safe, the rest proceed to the water. Crested
Pigeons also has the ability to suck water rather
than having to throw its head back to swallow. Nervousness
is usually showed by a "hitching up" of
a wing and usually occurs at times of conflict or
when disturbed by humans.
DIET:
Crested Pigeons have a diet consisting of mainly
small insects, green vegetation, small bulbs, and
seeds. These seeds are mostly from herbaceous plants
including Acacia trees. However, recently they have
been found eating exotic seed crops and introduced
weeds as well.
BREEDING and NESTING:
Crested Pigeons tend to breed any time of the year
but mostly spring and summer. Their nest is normally
in a platform of twigs located in a tree or a bush.
First the male begins his courtship dance by bobbing
his head up and down and proceeds as it spreads and
raises his tail and half expands its wings. Advertising
a low coo he continues next to display his iridescent
green feathers, tilting them to shimmer in the sunlight.
Once a female is attracted, the male then proceeds
to throw the female out of the nest until she returns
enough times for the male to finally accept her. At
the sign of acceptance, the female hops around dancing,
this is a sign that the two are united. At this point,
they begin to excessively caress each other in time
spans of a half an hour at a time. From this point
on, no other pigeon is allowed near the nest. This
courtship display is a biological isolation mechanism
indicating mating only between the same species. Once
the female recognizes the male of the species there
are physiological changes. An example is ovulation
of the female at the sight of the male's display.
The female produces two smooth white eggs at around
33mm x 24mm in size. Incubation lasts from 16-18 days.
The young fledge around 16 days old looking like miniature
version of adults, equipped with colorful markings.
In three months the young are fully grown.
STATUS:
The Crested Pigeon is very common and not at all
endangered. This could be due to the fact that they
have no major threats and have the ability to eat
even exotic seeds and introduced weeds. They are so
common in Australia that they are hunted as game bird.
|