Greater White-fronted Goose

I posted a picture of a domestic Graylag Goose last Wednesday. As I stated in that post, I found them a little confusing as it appears there are wild Graylags in the UK, but that most of what we see hear in the states are the domesticated, barnyard variety.
That brings me to Greater White-fronted Geese. I've seen several this fall and haven't given it much thought, but I realized while looking at a picture someone posted on OBOL just how similar they are to Graylags.
I've been meaning to post this image above for some time now. I took it at RNWR back on Dec 8. At the time I assumed it was a Greater White-fronted and I am sticking to that, but having gone through the exercise of trying to be sure the image posted on OBOL was of domestic Graylags, my confidence was somewhat reduced.
While I've read that Graylags can exhibit some black stripping on their bellies, this prominent feature on this goose reassures me that this is an adult Greater White-fronted Goose. This is the first adult that I have positively identified. All the other Greater White-fronted Geese that I have seen have been of first winter birds as their bellies were lacking the black striping.

Canada x Great White-fronted Goose Hybrid

Update:
It's been suggested that the hybrid is too large to be a cross with a Greater White-fronted Goose and is probably a cross with a domestic Graylag. Also, larger Canada Goose subspecies do not breed in the Arctic, the White-fronted's breeding area. Both are good arguments against a Greater White-fronted x Canada Goose cross.

Original Post:
Today I spent an hour during the late afternoon at TRNWR since it was such a nice sunny day. When I got there I stopped by the visitor center to check the water level and see if there was anything interesting in the rising ponds. There were several Canada Geese swimming in the pond at the time and since it is fair distance to the pond I just took a few shots and moved on to the trail.
Tonight while I was going through the the pictures I realized there was apparently a pretty obvious Canada x Greater White-fronted Goose hybrid among the Geese. The group in the image above is lead by a Greater White-fronted Goose. Following, surrounded by three Canada Geese, is the hybrid.
It has the body coloration of a Canada, but its neck is browner and more variable. The white cheek of its Canada influence is almost nearly disguised. To me the most telling characteristics is the pinkish, orange beak and the white feathers at the base of the beak. Both influenced by the Greater White-fronted genealogy.

Greater White-fronted Goose

On my home from birding on Saturday, I saw some geese coming in for a landing in a plowed field just outside of Wilsonville on SW 110th. I expected them to be Canada Geese or Cacklers, but they turned out to be Greater White-fronted Geese. I'm new to these geese, so I pulled over and snapped a few pictures.

Greater White-fronted Goose

My last day walking service roads at TRNWR turned out to be an interesting one. While there where not a lot of birds, I did see two new lifetime birds; a Golden-crowned Kinglet and a Greater White-fronted Goose. Plus I got up close and personal with a Red-breasted Nuthatch.
As I was walking across the central part of the refuge, what I thought was a large nondescript duck flew over head. I took a few shots of it as it flew over me thinking it will probably just turn out to be a Mallard. But when I viewed the images on my computer this evening, I got to thinking this might be something new. The white area below and above the tail was not something I have seen before. I have been reading on OBOL lately that people had been seeing White-fronted Geese, so I looked it up in my field guide and sure enough, that appears to be what this is. Based on Sibley's illustrations this is a Juvenile as its belly is missing the bars that an adult has.