The House Finch is a recent introduction from western into eastern
North America (and Hawaii), but it has received a warmer reception
than other arrivals like the European Starling and House Sparrow.
Thats partly due to the cheerful red head and breast of males,
and to the birds long, twittering song, which can now be heard
in most of the neighborhoods of the continent. If you havent
seen one recently, chances are you can find one at the next bird
feeder you come across.
At a Glance
Habitat
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Food
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Nesting
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Behavior
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Conservation
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Town
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Seeds
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Tree
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Ground Forager
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Least Concern
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Measurements
Both Sexes
Length
5.15.5
in
1314 cm
Wingspan
7.99.8
in
2025 cm
Weight
0.61 oz
1627 g
Relative Size
Same size as
a House Sparrow, but
more slender overall.
Other Names
Roselin familiar (French)
Gorrión doméstico, Gorrión común,
Gorrión mexicano (Spanish) |
Cool Facts
The House Finch was originally a bird of the western United States
and Mexico. In 1940 a small number of finches were turned loose
on Long Island, New York, after failed attempts to sell them as
cage birds (Hollywood finches). They quickly started
breeding and spread across almost all of the eastern United States
and southern Canada within the next 50 years.
The total House Finch population across North America is staggering.
Scientists estimate between 267 million and 1.4 billion individuals.
House Finches were introduced to Oahu from San Francisco sometime
before 1870. They had become abundant on all the major Hawaiian
Islands by 1901.
The red of a male House Finch comes from pigments contained
in its food during molt (birds cant make bright red or yellow
colors directly). So the more pigment in the food, the redder the
male. This is why people sometimes see orange or yellowish male
House Finches. Females prefer to mate with the reddest male they
can find, perhaps raising the chances they get a capable mate who
can do his part in feeding the nestlings.
House Finches feed their nestlings exclusively plant foods,
a fairly rare occurrence in the bird world. Many birds that are
vegetarians as adults still find animal foods to keep their fast-growing
young supplied with protein.
The oldest known House Finch was 11 years, 7 months old.
Habitat
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House Finches are familiar birds of human-created
habitats including buildings, lawns, small conifers, and urban
centers. In rurual areas, you can also find House Finches around
barns and stables. In their native range in the West, House
Finches live in natural habitats including dry desert, desert
grassland, chaparral, oak savannah, streamsides, and open coniferous
forests at elevations below 6,000 feet. |
Town
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Food
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House Finches eat almost exclusively plant
materials, including seeds, buds and fruits. Wild foods include
wild mustard seeds, knotweed, thistle, mulberry, poison oak,
cactus, and many other species. In orchards, House Finches eat
cherries, apricots, peaches, pears, plums, strawberries, blackberries,
and figs. At feeders they eat black oil sunflower over the larger,
striped sunflower seeds, millet, and milo. |
Seeds
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Nesting Facts
Clutch Size:
26 eggs
Number of Broods
1-6 broods
Egg Length
0.60.8
in
1.62.1
cm
Egg Width
0.50.6
in
1.31.5
cm
Incubation Period
1314
days
Nestling Period
1219
days
Egg Description
Pale blue
to white, speckled with
fine black and pale purple.
Condition at Hatching
Naked except
for sparse white down
along feather tracts, eyes closed,
clumsy.
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Nesting
Nest Description
A House Finchs nest is a cup made of fine stems, leaves,
rootlets, thin twigs, string, wool, and feathers, with similar,
but finer materials for the lining. Overall width of the nest is
3-7 inches, with the inside cup 1-3 inches across and up to 2 inches
deep.
Nest Placement
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House Finches nest in a variety of deciduous
and coniferous trees as well as on cactus and rock ledges. They
also nest in or on buildings, using sites like vents, ledges,
street lamps, ivy, and hanging planters. Occasionally House
Finches use the abandoned nests of other birds. |
Tree
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Behavior
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A highly social bird, the House Finch is rarely
seen alone outside of the breeding season, and may form flocks
as large as several hundred birds. House Finches feed mainly
on the ground or at feeders or fruiting trees. At rest, they
commonly perch on the highest point available in a tree, and
flocks often perch on power lines. During courtship, males sometimes
feed females in a display that begins with the female gently
pecking at his bill and fluttering her wings. The male simulates
regurgitating food to the female several times before actually
feeding her. |
Ground Forager
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Conservation
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House Finches are common and with the exception
of some areas in western North America, their populaitons increased
between 1966 and 2010, according to the North American Breeding
Bird Survey. Partners in Flight estimates a global breeding
population of 45 million with 76 percent in the U.S., 21 percent
in Mexico and 3 percent in Canada. They rate a 6 out of 20 on
the Continental Concern Scale and are not on the 2012 Watch
List. House Finches generally benefit from human development.
However, populations underwent a steep decline beginning in
January 1994 owing to a disease called mycoplasmal conjunctivitis.
The disease causes respiratory problems and red, swollen eyes,
making them susceptible to predators and adverse weather. House
Finch conjunctivitis was first observed at feeders in the Washington,
D.C., area. Its not harmful to humans, but it has spread
rapidly through the eastern House Finch population and into
the West. Learn
more here. |
Least Concern
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