Jackdaw subspp, NE England (1 Viewer)

Mark Lew1s

My real name is Mark Lewis

• Apr 6, 2015

• #1

Having seen this bird well in good light, I'm fairly happy it's a monedula (i.e. 'Scandinavian') type rather than soemmerringii ('Russian') type Jackdaw (notwithstanding the possibility of intergrades, of course).

I'd welcome any thoughts from anyone though - I don't have a great deal of experience of these!

 

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Nutcracker

Stop Brexit!

• Apr 6, 2015

• #2

Or could easily be a local spermologus bird, an apparent 'eastern' Jackdaw in Northumbs (at Killingworth) a couple of years ago lost its credentials when it was seen collecting nest material.

Where was this one?

 

KenM

Well-known member

• Apr 6, 2015

• #3

It seems to be symmetrical Mark (both sides but fading on the nape?). Symmetrical leucism at play....not unlike this one taken a few weeks ago, albeit on the wings?

 

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Tiraya

San Diego CA

• Apr 6, 2015

• #4

Perfectly symmetrical leucism is very uncommon...just due to the randomness of the leucism condition.

 

Hotspur

James Spencer

• Apr 7, 2015

• #5

Nutcracker said:

Or could easily be a local spermologus bird, an apparent 'eastern' Jackdaw in Northumbs (at Killingworth) a couple of years ago lost its credentials when it was seen collecting nest material.

Where was this one?

Click to expand...

Why would nesting cause a loss of credentials? Eastern phenotypes are as close as Holland so nesting surely not out of the question.

 

Hotspur

James Spencer

• Apr 7, 2015

• #6

The mottling to the breast is pro monedula. Alan Tilmouth knows a thing or two.

http://birdingfrontiers.com/2011/04/10/eastern-jackdaws/

Also see:

http://calidris.home.xs4all.nl/jackdaw.htm

 

Matt Silk

Well-known member

• Apr 7, 2015

• #7

Looks like a nice monedula to me too, underparts look good and a good collar

And on the staying to breed thing, I think (off the top of my head) there are several occasions where this has been reported - I guess its not that surprising if young birds end up in the wrong place... May result in birds that look (slightly) eastern that are in fact local just with some gene flow, or just be eastern birds that are now breeding in the wrong place...

Matt