Double-barred Finch
FAMILY: Estreldidae
GENUS: Poephila
SPECIES: bichenovii
OTHER NAMES: Banded Finch, Bicheno Finch, Black-ringed Finch,
Black-rumped Double-bar, Double-bar Finch, Owl-faced Finch, Ringed Finch.
Description:
Small agile finch with little
sexual dimorphism. Males' head, back and uper wings are brown-black with white
spots. Upper rump and tail are black with white loer rump and undertail.
Underparts and face cream. A black ring around the face and a black bar across
the lower breast (from one shoulder to another). Eyes brown, bill and legs
grey.
Females are similar to males but have narrower black barring. Immature birds
are duller forms of the adults but with only faint barring.
This finch is found in a variety of habitats and is usually encountered in
tight flocks of around 20 birds. Never found far from water, these birds feed
on or near the ground. In general behaviour and ecology it closely resembles
the Zebra Finch.
Length: 100-110mm.
Subspecies:
Two forms occur: a
white-rumped (nominate) form and a black-rumped form (race annulosa).
The latter is found in northern Australia west of Burketown (QLD).
Distribution:
Northern and eastern
Australia. It has expanded southward across a broad front from the coast of
southern NSW to the Murray-Darling river system.
Habitat:
Temperate and
subtropical euclaypt woodland and acacia scrub with a grassy understorey,
agricultral land and suburban parks and gardens.
Diet:
Seeds and insects.
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:
January-March in the
northwest and mainly July-November elsewhere in its distribution.
The nest is globular with a side entrance and measures 140mm long x 120mm wide
x 90mm high. The male alone collects the nest material, but both sexes are
involved in constructing the nest, incubating the eggs and rearing the young.
In captivity
Double-barred Finches will accept a variety of nesting receptacles ranging
including woven baskets and boxes.
Courtship Display:
Contrary to other
grassfinches, the Double-barred Finch has a fairly non-elaborate courtship
display. Males side u to females with feathers ruffed. He leans forward and
turns the head toward the female and wipes his beak on the perch repeatedly.
This may be accompanied by an almost inaudible chatter.
Sexual Maturity:
Becomes sexually mature
at the age of about 9 months, but most birds are most productive from their
second year to their fourth year.
Clutch:
4-5 white eggs (16mm x
12mm). 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 Coccidiosis and gastrointestinal worms