Carrion Crow or Raven primary? (1 Viewer)

halftwo

Wird Batcher

• Aug 23, 2019

• #1

Hope someone can answer this, as no text books nor internet search can supply the info.

I found a corvid primary today, 27cms long.

Is this within range for Carrion Crow - or more Raven sized?

Thanks,

H

 

H

Hauksen

Forum member

• Aug 23, 2019

• #2

Hi H,

halftwo said:

I found a corvid primary today, 27cms long.

Is this within range for Carrion Crow - or more Raven sized?

Click to expand...

From Fiedler, "Die Vögel Mitteleuropas sicher bestimmen", the wing length of Raven is >= 37.5 cm, while that of crows is < 35 cm. No values for the primaries are given, but maybe it's possible to draw a conclusion from the know proportions of the primaries to the wings.

Regards,

Henning

 

halftwo

Wird Batcher

• Aug 23, 2019

• #3

Thanks, Henning.

Not easy to do that!

 

Nutcracker

Stop Brexit!

• Aug 23, 2019

• #4

Wing 'lengths' in texts are for the folded wing, carpal joint to longest primary tip. As the non-feather part is pretty small, I'd say Carrion Crow (or perhaps Rook, of course), is more likely than Raven.

Otherwise, can you post a photo? There might be structural differences that can help.