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ID help please !
Fra : Beng


Dato : 18-05-05 17:14

Hi.

Here we go again :)

Two birds this time.

My guess is Rough-legged buzzard and a Red-breasted merhanser.

What do YOU think ?

http://orre.mine.nu/id/id4/id4.htm


Thanks

//Ben


 
 
markvanderv1@yahoo.c~ (18-05-2005)
Kommentar
Fra : markvanderv1@yahoo.c~


Dato : 18-05-05 19:46

Red-breasted Merganser, certainly.

In the wild the identity of the hawk would be evident within two
seconds. OTOH, it's hard to gauge size and jizz from a photo.Why are
you certain that it is a Rough-legged Hawk and not a Eurasian Marsh
Harrier? I'm 50-50 myself.


Phil Wilson (18-05-2005)
Kommentar
Fra : Phil Wilson


Dato : 18-05-05 20:00

markvanderv1@yahoo.com wrote:
> Red-breasted Merganser, certainly.
>
> In the wild the identity of the hawk would be evident within two
> seconds. OTOH, it's hard to gauge size and jizz from a photo.Why are
> you certain that it is a Rough-legged Hawk and not a Eurasian Marsh
> Harrier? I'm 50-50 myself.

For a Marsh Harrier to be that pale underneath it would require to be
male. Male Marsh Harriers do not have black carpal patches (at the
front bend of the inner and outer wing). Furthermore Harriers are all
conspicuously long- and slender-tailed. The tail in this case
(although foreshortened by the angle) is clearly too short. Then there
is the blackish-brown belly patch, with a clear demarcation line, and
a pale head and upper breat that appears streaked. This is not
possible for Marsh Harrier, but fits Roughleg to a T. And the wings
are slightly too broad for Marsh Harrier (related to the length of the
tail). Last but not least it just looks like a Buzzard rather than a
Harrier (it's a big, heavy bird), although we're fortunate in having
an unambiguous photo to identify. In life it's always possible to get
poor views where ID is in doubt. I reckon 20-30 percent of raptors
just have to be put down as probables.

Cheers,

--
Phil
http://philip.fotoblog.me.uk
Mainly Old Photos with an Edinburgh Connection
(More added recently).


Phil Wilson (18-05-2005)
Kommentar
Fra : Phil Wilson


Dato : 18-05-05 20:10

Phil Wilson wrote:
> markvanderv1@yahoo.com wrote:
>> Red-breasted Merganser, certainly.
>>
>> In the wild the identity of the hawk would be evident within two
>> seconds. OTOH, it's hard to gauge size and jizz from a photo.Why
>> are
>> you certain that it is a Rough-legged Hawk and not a Eurasian Marsh
>> Harrier? I'm 50-50 myself.
>
> For a Marsh Harrier to be that pale underneath it would require to
> be
> male. Male Marsh Harriers do not have black carpal patches (at the
> front bend of the inner and outer wing). Furthermore Harriers are
> all
> conspicuously long- and slender-tailed. The tail in this case
> (although foreshortened by the angle) is clearly too short. Then
> there
> is the blackish-brown belly patch, with a clear demarcation line,
> and
> a pale head and upper breat that appears streaked. This is not
> possible for Marsh Harrier, but fits Roughleg to a T. And the wings
> are slightly too broad for Marsh Harrier (related to the length of
> the
> tail). Last but not least it just looks like a Buzzard rather than a
> Harrier (it's a big, heavy bird), although we're fortunate in having
> an unambiguous photo to identify. In life it's always possible to
> get
> poor views where ID is in doubt. I reckon 20-30 percent of raptors
> just have to be put down as probables.

I should add that there is a clear black edging to the rear wing in
this bird. Marsh Harriers do not have that either. (Although I had to
check the book to see if my memory was correct!).

Cheers,

--
Phil
http://philip.fotoblog.me.uk
Mainly Old Photos with an Edinburgh Connection
(More added recently).


N/A (18-05-2005)
Kommentar
Fra : N/A


Dato : 18-05-05 20:00



Malcolm (18-05-2005)
Kommentar
Fra : Malcolm


Dato : 18-05-05 20:08


In article <1116441977.274029.260370@g49g2000cwa.googlegroups.com>,
markvanderv1@yahoo.com writes
>Red-breasted Merganser, certainly.
>
>In the wild the identity of the hawk would be evident within two
>seconds. OTOH, it's hard to gauge size and jizz from a photo.Why are
>you certain that it is a Rough-legged Hawk and not a Eurasian Marsh
>Harrier? I'm 50-50 myself.
>
You should take into consideration that the photograph was taken in
northern Scandinavia, way outside the range of Marsh Harrier.

--
Malcolm

markvanderv1@yahoo.c~ (19-05-2005)
Kommentar
Fra : markvanderv1@yahoo.c~


Dato : 19-05-05 01:32


Phil Wilson wrote:
> markvanderv1@yahoo.com wrote:
> > Red-breasted Merganser, certainly.
> >
> > In the wild the identity of the hawk would be evident within two
> > seconds. OTOH, it's hard to gauge size and jizz from a photo.Why
are
> > you certain that it is a Rough-legged Hawk and not a Eurasian Marsh
> > Harrier? I'm 50-50 myself.
>
> For a Marsh Harrier to be that pale underneath it would require to be

> male.
Yes.

Male Marsh Harriers do not have black carpal patches (at the
> front bend of the inner and outer wing).

This was the first thing I looked for, but the photos were inconclusive
to me. It *looks* like a dark carpal patch, but I couldn't be certain
it wasn't a function of lighting or shadows. Looking again at the
second, larger photo, though, it appears a bit more obvious that it is
a dark carpal patch.

> Furthermore Harriers are all
> conspicuously long- and slender-tailed. The tail in this case
> (although foreshortened by the angle) is clearly too short.

I couldn't tell this from the photo. The tail looks proportionally long
for a buteo to me.

> Then there
> is the blackish-brown belly patch, with a clear demarcation line, and

> a pale head and upper breat that appears streaked.

Boy, I really can't tell from the photo whether or not the bird has any
of these field marks!

>This is not
> possible for Marsh Harrier, but fits Roughleg to a T. And the wings
> are slightly too broad for Marsh Harrier (related to the length of
the
> tail).

Agreed. The wings do look broad in the photo.

> Last but not least it just looks like a Buzzard rather than a
> Harrier (it's a big, heavy bird), although we're fortunate in having
> an unambiguous photo to identify. In life it's always possible to get

> poor views where ID is in doubt. I reckon 20-30 percent of raptors
> just have to be put down as probables.




Phil Wilson (19-05-2005)
Kommentar
Fra : Phil Wilson


Dato : 19-05-05 09:48

markvanderv1@yahoo.com wrote:

>> Then there
>> is the blackish-brown belly patch, with a clear demarcation line,
>> and
>
>> a pale head and upper breat that appears streaked.
>
> Boy, I really can't tell from the photo whether or not the bird has
> any of these field marks!

Well, seriously, that may just have to do with the configuration of
your monitor. My experience of them (and I did a bit of research
because I maintain a set of photos online) is that they are
tremendously variable when it comes to contrast and brightness
settings etc. The marks on the bird are (although not wonderfully
defined) clearly there on my monitor the way it's set up. Sometimes I
find that photos posted online are too dark and I have to put them
through my photo-editor to reveal things, but not often.

Cheers,
--
Phil
http://philip.fotoblog.me.uk
Mainly Old Photos with an Edinburgh Connection
(More added recently).


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