BOP NE.London? (1 Viewer)

KenM

Well-known member

• Jun 28, 2017

• #1

Going through an old SD card...some of last years shots, taken on a cold (Northerly) April day. Extremely high, c300-400m heading North. It's fair to say that ''most'' local Buteos seen...are at a much lower elevation, from tree canopy height to a 100m max. Although the images are up to my usual ''high'' standard Image 3. looking particularly ''vulturine'' and apart from the tail being pale (never seen a CB with such a contrast and a terminal band), Image 5 suggests a pale rump/head as well. On a probability scale...scarcity v commonality, what are the odds of a CB looking like this, as opposed to the occurrence of a high, Northerly drifting (scarce) migrant following the forest ''corridor'' at it's narrowest point running SW-NE. ?

Cheers

 

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Andy Adcock

Worst person on Birdforum

• Jun 28, 2017

• #2

What do you expect from this Ken really?


A

 

KenM

Well-known member

• Jun 28, 2017

• #3

andyadcock said:

What do you expect from this Ken really?


A

Click to expand...

Andy I think these images as poor as they might seem, have a certain merit as most of us have seen distant BOPS in the field, and have "pulled our hair out" on these occasions...therein lies the challenge?

I think the points that I've raised have merit?.....If only to generate another "U turn" at least.

 

lou salomon

the birdonist

• Jun 28, 2017

• #4

shape says buteo buteo. tail pattern can be an artefact in such 'high resolution' pics.

 

Nutcracker

Stop Brexit!

• Jun 28, 2017

• #5

Sulawesi Serpent Eagle



:king:

 

T

THE_FERN

Well-known member

Opus Editor

• Jun 28, 2017

• #6

Seconded...

 

Andy Adcock

Worst person on Birdforum

• Jun 28, 2017

• #7

Theses images make it look like it has a white tail?


A

 

tconzemi

Tom

Supporter

• Jun 28, 2017

• #8

Talking ID here does not really make sense, but talking about digital photo artefacts may be interesting.
Look at this pic of Common Buzzard from Luxembourg: base of tail completely overexposed and all fine barring disappearing. Exactly the same happens in very distant birds in digital pictures. Motion blurring (be it the camera or the bird) gives the same result: 2 or 3 bars may merge and finer bars disappear altogether.
This said Sulawesi Serpent Eagle seems a good and reasonable call!

 

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KenM

Well-known member

• Jun 28, 2017

• #9

tconzemi said:

Talking ID here does not really make sense, but talking about digital photo artefacts may be interesting.
Look at this pic of Common Buzzard from Luxembourg: base of tail completely overexposed and all fine barring disappearing. Exactly the same happens in very distant birds in digital pictures. Motion blurring (be it the camera or the bird) gives the same result: 2 or 3 bars may merge and finer bars disappear altogether.
This said Sulawesi Serpent Eagle seems a good and reasonable call!

Click to expand...

An interesting theory Tom!...digital Images of birds with white in the plumage taken at distance or closer (under less than ambient lighting), will invariably over-expose "the white" and reproduce an exaggerated artefact to the point where one should disregard the white component, as it will not be accurately reflected?.....mmm!

And what are the salient points on the "rump" of your provided image for CB as ID features, I too have seen CB with a pale rump on several occasions, but never one like as shown. :eek!:

As an aside do you have any images of CB with a "white undertail" with contrasting terminal bands, as I've never seen any in all my years ?

Cheers