photo 1a,b,c,d/copyright: Norman Deans van Swelm
Falcon 19022008 Oostvoorne, The Netherlands
Peter Wilkinson comments:
Gyr x Saker, I think. It's a relatively popular combination. I've seen quite a lot in captivity over the years (more hybrids than pure Gyr, in fact) and a good proportion look basically like your bird, but they can vary. A breeder I once met specialised in producing really dark ones, where the parentage was much less obvious.
I don't think it's pure Gyr, though I don't doubt one could look like this plumage-wise. Bill and head don't look quite massive enough and the wings look a little long in relation to the tail. The blue cere, incidentally, doesn't mean it is a bird hatched last year - Gyr in particular can keep blue ceres for some years.
Interesting. Saker and Gyr are so close genetically that I have heard one geneticist describe Gyr as "Arctic Saker" and Saker as "Desert Gyr"!
I am much more familiar with Saker and hybrids in captivity than pure Gyr. Sakers can be pretty variable, and it would only take your bird to be a bit warmer brown all over to be virtually indistinguishable from many of the pure Sakers I have seen.
Falcon 19022008 1b Oostvoorne, The Netherlands c Norman Deans v Swelm
Falcon 19022008 1c Oostvoorne, The Netherlands c Norman Deans v Swelm
Falcon 19022008 1d Oostvoorne, The Netherlands c Norman Deans v Swelm
photo 2a,b,c,d/copyright: Renee Eelsing
The falcon below was found by the public and
delivered to the birdhospital in The Hague.
Falcon 2 head 1 11092007 The Hague, The Netherlands
Falcon 2 front 11092007 The Hague, The Netherlands
Falcon 2 side 11092007 The Hague, The Netherlands
Falcon 2 11092007 The Hague, The Netherlands
photo 3a,b,c/copyright: Norman D. van Swelm
The falcon here below was found on the Maasvlakte in the
western part of The Port of Rotterdam on 4th October 2007.
Falcon 3 04102007 3 Port of Rotterdam, The Netherlands c Norman Deans v Swelm
Falcon 3 04102007 2 Port of Rotterdam, The Netherlands c Norman Deans v Swelm
Falcon 3 04102007 Port of Rotterdam, The Netherlands c Norman Deans v Swelm
photo 4a,b,c/copyright: Ellen Sandberg
This falcon was also photographed in the western part of the
Port of Rotterdam, The Netherlands, and very briefly seen.
Falcon 4a,b,c 29-10-2006 Port of Rotterdam, The Netherlands c Ellen Sandberg
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