Gouldian
Finch
FAMILY:
Estreldidae
GENUS: Erythrura
SPECIES: gouldiae
OTHER
NAMES: Desert Parrotfinch, Painted Finch, Gouldian Grassfinch, Purple- breasted
Finch, Purple-chested Finch, Rainbow Finch, Rainbow Bird, Lady Gould Finch.
Description:
Medium
to large strikingly coloured finch. Male's wings and back are green, rump and
upper tail coverts blue. Tail is long, pointed and black. Crown, face, chin and
cheeks black, breast purple. The belly is yellow, tending to cream toward
thevent and undertail. Eyes are brown, the bill is horny white with a coral red
tip. Legs and feet are yellow.
Females resemble males, but are much duller.
Immature birds are generally an olive brown above and grey below and have blue
nodules around the gape.
This finch is the most sociable of all the
grassfinches and is strongly gregarious in all its activities. It is not
surprising therefore, that they are usually encountered in very large flocks.
Gouldian Finches are thought to be migratory, dispersing southward to breed
during the monsoon and retiring to coastal lowlands during the dry period.
When feeding, Gouldian Finches come down close to the ground but seldom actually
reach the ground. Instead, they prefer to harvest seeds directly from the plant
and to take insects on the wing. When disturbed, the Gouldian Finch will take to
the tops of trees. It also roosts in treetops.
Length:
130-140mm.
Subspecies:
None.
Status:
In
the wild - endangered.
In captivity - secure (one of the world's most popular
aviary birds).
Threatening
Processes:
Fire
and trapping for the avicultural trade have been implicated in the decline of
this species.
Distribution:
Across
tropical Australia from the Kimberley to Cape York. The Gouldian Finch has
declined drastically since early this century and is now considered to be rare
east of the Gulf of Carpentaria.
Habitat:
Tropical
savannah woodland.
Diet:
Seeds
and insects (especially when breeding).
In captivity, a good quality finch
seed mix is the mainstay of the diet. This should be supplemented with greenfood
(eg half ripened seed heads of grasses or most other herbs from the garden such
as Shepherd's Purse, Dandelion and Chickweed, or any vegetables such as
silverbeet, lettuce, etc.).
Many aviculturalists provide live food (often
mealworms) during the breeding season although others have had good results
without it. Lastly, it is important to provide birds with ample grit (fine) and
perhaps cuttle-fish where possible.
Breeding:
December-April.
The nest is a rudimentary structuremade of grass and located in a hollow branch
of a tree or in a termite mound. (This is the only Australian finch which nests
exclusively in hollow branches or termite mounds).
Both sexes are involved
in constructing the nest and incubation is shared during the course of the day.
The female broods at night, with the male remaining close by. The young are also
cared for by both parents
In
captivity Gouldian Finches will accept a variety of nesting receptacles ranging
including woven baskets and boxes.
Courtship
Display:
The
male turns toward the female and commences to wipe his bill on the perch. This
increases in rapidity until he commences a bobbing dance whilst ruffing his
feathers and holding his entire body erect. Often this is accompanied by
crowing. The female eventually signals her readiness to copulate by crouching
down and quivering her tail.
Sexual
Maturity:
Becomes
sexually mature at the age of about 9 months, but most birds are most productive
from their second year onward.
Clutch:
4-8
pure white eggs (17mm x 13mm). Incubation period: 12-14 days. The young usually
fledge at around 21 days. In warm climates these birds produce multiple
broods.
Independant young should not be removed from the parents until about
4 weeks after fledging.
Mutations
and Hybrids:
Two
colour mutations are reported for this species: a black-breasted form (solid
black between bars) and a fawn form.
Suitable
Aviaries and Compatible Birds
Double-barred
Finches will be quite happy in suspended cages or breeding cabinets. These
should have at least the following dimensions: 700mm(long) x 400mm x 400mm.
These birds are at their best in larger planted aviaries. Such an aviary should
provde plenty of shelter and should probably have a roof over at least half its
area.
Black-throated finches will readily share an aviary with most other
finches (eg. zebra, painted, parrot, etc etc), quail, doves and even neophema
parrots.
Species
Specific Problems
This
species tends to be prone to airsac mite and scaly mite. Stress and obesity are
also common problems encountered with this bird.