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Purple
Finch (Carpodacus purpureus) |
Seasonal
status at MBO:
| JAN
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FEB
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MAR
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APR
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MAY
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JUN
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JUL
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AUG
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SEP
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OCT
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NOV
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DEC
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QUICK TIPS:
| 1) Look
at the overall appearance - only AHY/ASY males
have extensive reddish-purple plumage, while HY/SY
males are mostly to entirely brown with sometimes
a few reddish tinges, and females are entirely brown.
2) Look at
the outer rectrices - they are narrow and
pointed at the tip on HY/SY birds, and broad and
relatively rounded on AHY/ASY birds
3) Check the
primary coverts - they are narrow
and pointed and contrastingly paler than the
adjacent greater coverts on HY/SY birds, and
relatively broad and rounded and not contrasting
in colour or wear with the greater coverts on AHY/ASY
birds
4) Examine
the greater coverts - on some HY/SY birds there
is a visible moult limit between paler outer
coverts and darker inner coverts that have been
replaced; on other HY/SY birds and all AHY/ASY birds
there is no moult limit among the greater coverts |
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Ageing and sexing guidelines:
Ageing and sexing details:
ASY males are easily recognizable by the
strong red/purple wash across the upper breast, head, back, and wings.
No other age or sex class has more than a trace of red.

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2007

Photo by Marcel Gahbauer,
McGill Bird Observatory, May 2005
Check for broad and truncate primary coverts on ASY Purple Finches.
Also, ASY males are the only age/sex class in which there is an
appreciable amount of red on the upper wing.

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2007
Rectrices of ASY Purple Finches are noticeably more broad and truncate
than those of SY birds, which are usually quite pointed.

Photo by Marie-Anne
Hudson,
McGill Bird Observatory, May 2007
RETURN TO AGE/SEX
OVERVIEW
Plumage is brown and white, as is the case
for SY Purple Finches of both sexes. Wings and tail should be
checked to assess age, while the presence of a brood patch during the
breeding season can be used to identify females.

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2007
Check for broad and truncate primary coverts on ASY Purple Finches.
Also, on ASY birds the coverts are uniform in colour and wear.

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2007
Rectrices of ASY Purple Finches are noticeably more broad and truncate
than those of SY birds, which are usually quite pointed.
RETURN TO AGE/SEX
OVERVIEW
SY male
Purple Finches may be entirely brown and white, but can also show faint
traces of red, especially on the head, upper breast, and wings.
However, sexing by cloacal protuberance is most reliable, and age should
be confirmed by wing and tail.

Photo by Marcel Gahbauer,
McGill Bird Observatory, May 2006

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2006
There may be a trace of red on the wings, as in the first photo below,
or none at all, as in the second. The outer primary coverts are
generally fairly narrow and tapered, with only narrow pale edging.
There may be a molt limit among the greater coverts

Photo by Marie-Anne Hudson,
McGill Bird Observatory, May 2006

Photo by Marcel Gahbauer,
McGill Bird Observatory, May 2006
SY birds have relatively pointed outer rectrices.

Photo by Marcel Gahbauer,
McGill Bird Observatory, May 2006
RETURN TO AGE/SEX
OVERVIEW
SY birds entirely lacking red can be sexed
only by cloacal protuberance or brood patch.

Photo by Marie-Anne Hudson, McGill Bird Observatory, May 2007
The outer primary coverts are generally fairly narrow and tapered, with
only narrow pale edging. There may be a molt limit among the
greater coverts

Photo by Marie-Anne Hudson, McGill Bird Observatory, May 2007
SY birds have relatively pointed outer rectrices.

Photo by Marie-Anne Hudson, McGill Bird Observatory, May 2007
RETURN TO AGE/SEX
OVERVIEW
Only AHY males have a purple/red wash over
their upper breast, head, back, and wings. Some individuals
retaining brown feathers, such as the male pictured below, may be
considered SY.

Photo by Marcel Gahbauer,
McGill Bird Observatory, October 2004
RETURN TO AGE/SEX
OVERVIEW
AHY females are brown and white, as are HY
Purple Finches of both sexes. The shape of the outer rectrices are
the easiest indicator of age, and moult patterns on the wing are also
useful.
AHY females show no moult
limit among the coverts, and have broad and truncate outer primary
coverts with fairly distinct pale edging.
The outer rectrices of AHY
Purple Finches are broad and quite rounded at the tip.
RETURN TO AGE/SEX
OVERVIEW
Some AHY
birds can be reliably aged as SY at least until late in their prebasic
moult by the presence of very worn and faded unreplaced juvenal primary
coverts.

Photo by Marcel Gahbauer,
McGill Bird Observatory, August 2005
Note the extreme contrast between the very faded
(and long) juvenal outer primary covert and the newly grown adult
coverts.

Photo by Marcel Gahbauer,
McGill Bird Observatory, August 2005
SY birds have relatively pointed outer rectrices
prior to their prebasic moult; the individual in the photo below has
just replaced its tail and is showing broader rectrices typical of an
AHY bird. Note the very worn condition of the outer primaries.

Photo by Marcel Gahbauer,
McGill Bird Observatory, August 2005
RETURN TO AGE/SEX
OVERVIEW
HY
Purple Finches are heavily streaked brown/white all over, lacking reddish
tones anywhere. Sex can generally not be determined at this
age. HY birds are best separated from AHY females by having narrower
and more pointed primary coverts and rectrices.

Photo by Marcel Gahbauer,
McGill Bird Observatory, October 2004
HY Purple Finches may show a moult limit among
greater coverts; in this case the inner greater coverts are in the
process of being replaced. The primary coverts have little pale
edging, and the outer coverts (though not well visible in this photo)
are relatively narrow and pointed.

Photo by Marcel Gahbauer,
McGill Bird Observatory, October 2005

Photo by Marie-Anne Hudson, McGill Bird Observatory, August 2007
HY Purple Finches have
pointed rectrices.

Photo by Marcel Gahbauer,
McGill Bird Observatory, October 2005
RETURN TO AGE/SEX
OVERVIEW
RETURN TO AGE/SEX
OVERVIEW
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