domestic goose x Canada Goose Anser anser/Anser cygnoides x Branta canadensis

Hybrids between domestic Greylag Goose and Canada Goose may look identical to hybrids between wild Greylag Goose and Canada Goose but many can be identified on account of them showing extra white in the plumage, brighter bare parts or a bulkier body shape.

Hybrids between domestic Swan Goose and Canada Goose may look very similar but typically (if not always) have an entirely black bill, and they may show a hint of the domestic Swan Goose's raised 'knob' at the base of the bill. Sometimes they show a longer narrower neck than other Canada Goose hybrids.

Many domestic geese have mixed Greylag Goose and Swan Goose ancestry and for individual hybrids it may be impossible to tell if the domestic goose parent is pure Greylag Goose, pure Swan Goose or a Greylag Goose x Swan Goose hybrid. Sometimes a brood of birds will show a mixed appearance (for example some with black bills and others with pink/orange bills) and in such cases I tend to assume that the domestic parent was of mixed origin.

For any apparent Greylag Goose x Canada Goose hybrid in North America it is probably safe to assume that the Greylag Goose parent was of domestic origin, as wild Greylag Goose does not occur there.

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presumed domestic goose (Greylag Goose x Swan Goose hybrid) x Canada Goose hybrids, Thetford (Norfolk, UK), 9th February 2013: this flock of 8 hybrids were closely accompanied by a domestic Swan Goose x Greylag Goose hybrid and a Canada Goose - it seems likely that these were the parents of the 8

 

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presumed domestic goose (Greylag Goose x Swan Goose hybrid) x Canada Goose hybrids, Thetford (Norfolk, UK), 19th November 2019: at least 7 birds here possibly the same as the 8 shown above, or perhaps more recent young from the same parents (the domestic hybrid still being with them)

 

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presumed domestic goose (Greylag Goose x Swan Goose hybrid) x Canada Goose hybrid, Ythan Estuary (Aberdeenshire, UK), 18th March 2014 - a lone tame bird, the predominantly dark bill presumably indicates Swan Goose ancestry while the small amount of pink on the bill probably comes from another species

 

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probable domestic Greylag Goose x Canada Goose hybrid, Nunnery Lakes, Thetford), 19th November 2016 - the extent of white on the head and neck makes me think the Greylag parent is likely domestic, but I am not certain that this is not possible where ordinary feral Greylag is involved

 

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probable domestic Greylag Goose x Canada Goose hybrid (with Canada Geese), Nunnery Lakes, Thetford), 19th November 2016 - possibly the same bird shown above

 

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domestic Greylag Goose x Canada Goose hybrid (with Canada Goose), Nunnery Lakes, Thetford), 19th November 2016 - here the white streak on the side of the breast is further indication that the Greylag parent had domestic ancestry

 

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probable domestic Greylag Goose x Canada Goose hybrid, Abbey Farm, Flitcham (Norfolk, UK), 1st October 2003 - despite the dark breast this bird was large enough that Barnacle Goose or Cackling Goose parentage is not considered likely

 

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probable domestic Greylag Goose x Canada Goose hybrid, Swanton Morley (Norfolk, UK), 6th March 2004

 

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probable domestic Greylag Goose x Canada Goose hybrid, Abberton Reservoir (Essex, UK), 21st August 2004

 

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presumed domestic Greylag Goose x Canada Goose hybrid, Sevenoaks (Kent, UK), 20th December 2014 - such very white individuals can be difficult to seperate from white domestic geese: look out for the tail pattern - often, as here, this is uniformly dark which indicates that one of the Branta species is involved

 

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domestic Greylag Goose x Canada Goose hybrid, Windermere (Cumbria, UK), 28th December 2016

 

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presumed domestic Greylag Goose/Swan Goose x Canada Goose hybrids, Hayle Estuary (Cornwall, UK), 10th August 2012 - of 5 hybrids in this flock the plumage of 4, including the one at the front in the photos here, resembled that of wild Greylag Goose x Canada Goose hybrids. This one shows a predominantly blackish bill suggesting that domestic Swan Goose may be involved. The 5th bird is at the rear in these photos and has more white on the head than typical Greylag x Canada Goose hybrids, possibly suggesting domestic origin.

 

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presumed domestic Swan Goose x Canada Goose hybrid (with Greylag Goose), Santon Downham (Norfolk, UK), 4th April 2015

 

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presumed domestic Greylag Goose x Canada Goose hybrid, Wissington (Norfolk, UK), 4th April 2015

 

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domestic (?) Greylag Goose x Canada Goose hybrid, Welney (Norfolk, UK), 10th January 2015

 

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The four individuals shown in these three photos were closely associating with each other and were presumed to be siblings. Nevertheless they are all slightly different. Two have all-dark bills (left), two have pale bills (above). One of the dark-billed birds has white speckling on the neck, the other doesn't; similarly one of the pale-billed birds has white speckling on the neck and the other doesn't.

domestic goose (probably Greylag Goose x Swan Goose hybrid) x Canada Goose hybrids, Drift Reservoir (Cornwall, UK), 1st October 2005