Long-tailed
Finch
FAMILY:
Estreldidae
GENUS: Poephila
SPECIES: acuticauda
OTHER
NAMES: Black Heart Finch, Heck's Finch, Heck's Grassfinch, Long-tailed
Grassfinch, Orange-billed Grassfinch, Shafttail Finch, Yellow-billed Longtail ,
Red-billed Longtail, Orange-billed Grassfinch.
Description:
Medium
sized finch which displays little or no sexual dimorphism. The male's crown is
blue-grey with the back and wings fawn-brown. The rump is black, the upper tail
coverts white and the tail black. The throat and upper breast are black, the
lower breast and belly fawn. Lower belly and undertail coverts are white with
black band from rump to lower flanks. The eyes are brown, the bill yellow and
the legs orange-red.
Females resemble males closely, but are identified by a
smaller throat patch. Immature birds resemble adults, but have duller plumage
and black bills and legs.
This finch is highly social and is usually
encountered in small flocks of up to 15 pairs. Like the Black-throated Finch,
the Long-tailed Finch forms the strongest pair bonds of all the Australian
finches. Males and females are always to be found close together (never more
than a metre apart on the ground). Where one bird goes, the other always
folows.
Long-tailed Finches feed mainly on the ground but at night it roosts
high in the tree tops in purpose-built nests.
Length:
150mm.
Subspecies:
Although
not formally recognised, P. a. hecki is considered by aviculturalists as a
separate and distinct subspecies. Found in the east of the distribution this
race is identified by its red bill (as opposed to yellow in the western race).
Between these races there are a number of intermediate bill colourations.
Status:
In
the wild - common.
In captivity - common.
Threatening
Processes:
No
direct threatening processes.
Distribution:
Across
tropical Australia from the Kimberley to the head 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:
January-May.
The nest is a globular structure with a side entrance (tunnel). Its dimensions
are approx. 130mm high x 110mm wide. Tunnel length 75mm. It is constructed from
grass and lined with white plant fibre and feathers. The nest is usually located
among fine branches in the top of a eucalypt. Occasionally in a pandanus palm.
Both sexes are involved in constructing the nest. Incubation of the eggs and
care for the young is also shared.
In
captivity Long-tailed Finches will accept a variety of nesting receptacles
ranging including woven baskets and boxes.
Courtship
Display:
The
male's display is preceded by head bobbing by both sexes. The male then begins
to perform a bobbing and bowing dance. During this process the feathers on the
head and throat are ruffed.
Sexual
Maturity:
Becomes
sexually mature at the age of about 9 months, but most birds are most productive
from their second year onward.
Clutch:
4-5
pure 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
3-5 weeks after fledging.
Mutations
and Hybrids:
There
are several colour mutations known for the Long-tailed Finch. These include:
Fawn, White, Cream and Pied.
The Long-tailed Finch is known to have
hybridised with the Black-throated Finch, Masked Finch, Zebra Finch,
Double-barred Finches and Plum-headed Finches. There are also reports of hybrids
having been produced with the Diamond firetail, Crimson Finch, Chestnut-breasted
Mannikin and Bengalese Finch.
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 Coccidia and gastrointestinal worms. Some hens are
reported to experience problems with egg binding in their first breeding
season