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Update December 03, 2007: added new page of four GWFG in flight from Texas; an orange-billed, darker-headed adult with two pink-billed adults and an orange-billed juvenile - click here or read text below.
Update March 16, 2006: changed the four-letter code used here for Greater White-fronted Goose from GWGO to GWFG.
Update April 11, 2003:
added the references for Banks' taxonomic article and Kaufman's article on IDing flavirostris in North America, and adjusted the text (in red) to reflect this latter resource.
Update March 25, 2003: added discussion on separating the larger Nearctic forms from Greenland flavirostris.
Update March 24 2003: added list of references to the bottom of the page.

This page is devoted to exploring the appearance and identification of the various forms of Greater White-fronted Goose (Anser albifrons), or GWFG. It is a work in progress, as much remains unstudied within this taxa group; indeed one form is perhaps the least-known of all the Anser assemblage.
Initially this page concentrates on the Nearctic forms:
Pacific White-fronted Goose A. a. frontalis: the commonest form; breeds in numerous pockets in the tundra zone from western Alaska to perhaps as far east as northwestern Hudson Bay, Canada - total population east/north of the Rockies is much smaller than that breeding south/west of the Rockies; birds breeding in the tundra zone of eastern Siberia may also be this form; wintering locations are based on breeding populations, with the largest populations from western and southwest Alaska wintering from Oregon to California, and most of the small, more northern and eastern populations wintering on the coastal plain of Texas and eastern Louisiana; total population in the order of ca. 250,000 birds.
Tule White-fronted Goose A. a. elgasi: breeds in taiga at Redoubt Bay, and possibly other nearby locations in the Cook Inlet, southwestern Alaska; winters in the Sacramento Valley of northern California, with a couple of banded recoveries from east of the Rockies e.g. one from Texas; population in the order of ca. 2,000 birds. For a period this form was erroneously referred-to as "gambelli."
Gambel's White-fronted Goose A. a. gambeli: sensu strictu, as per Hartlaub 1852; Delacour and Ripley, 1975; presumed to be the taiga breeders at the Old Crow Flats, Yukon, and possibly similar habitats further east in Arctic Canada (Elgas 1970); presumed to winter in Texas; population unknown; the history of this taxon is clouded with uncertainty and confusion; a couple of specimens from Texas (Oberholser 1974) plus a small group of hand-reared chicks captured at the Old Crow Flats (Elgas 1970) comprise the entire published knowledge of this enigmatic form.

Birds from near Fort Worth, North-central Texas: this region is not normally part of the wintering range of GWFG, and I believe that the few records of overwintering individuals or pairs represent sick/injured birds (sometimes plus an adult guardian?); my tentative thoughts are that all the birds I've seen are gambeli (although I cannot yet discount elgasi):
A juvenile/first-basic from March 1992.
A juvenile/first-basic from October 1998; later joined by another immature bird, and photographed on December 31, 1998 and again on January 12, 1999.
A juvenile/first-basic plus adult from April 10, 2000, and photographed again on May 4, 2000.

Birds from the south-central Texas Coastal Plain: numerous Snow and GW Geese winter in the region, along with smaller numbers of Ross's Geese and a few Canadas.
A flock of presumed gambeli from mid-February 1999.
A flock of presumed frontalis with one gambeli/elgasi from mid-February 2001. This page is the only one I have that shows a direct comparison of the smaller and larger forms. I have seen many smaller birds in the Texas Coastal Plain, and I feel that the birds seen in Fort Worth are the larger form.
ADDED DEC 2007: A flock of presumed frontalis with one presumed gambeli from early December 2007.

Similarity to the Greenland Greater White-fronted Goose, A. a. flavirostris:
A recent article in Birding World (Kemp 2003) discussed separating flavirostris from nominate Eurasian albifrons - largely based upon a family group of two adults and six first-winter birds seen in Norfolk in the company of one first-winter nominate albifrons and a couple of Pink-footed Geese (Anser brachyrhynchus.) To my knowledge, only one published article has mentioned separating flavirostris from gambeli/elgasi:- Kaufman 1994 - and this mostly urges caution rather than offers a solution - and thus I feel that most Europeans and some east coast North American birders may not realise the potential pitfalls presented by some individuals of the Nearctic White-fronted Goose group (frontalis, gambeli, elgasi.)
Here are links to some "flavirostris" on the WWW - note that some may NOT be flavirostris!:
http://www.surfbirds.com/Rarities/ukstoppress-jan0502.html- birds from Islay, Scotland - part of their main wintering range
http://cyberbirding.uib.no/photo/a_albifrons_01.php- a bird from Norway
http://www.hi.is/~yannk/photosIS.html- a bird from Iceland
http://space.virgilio.it/ebnitalia@virgilio.it/gallery/oca_lofla.htm- a bird from Italy (LINK NOW BROKEN)
http://www.surfbird.onlinehome.de/mystery/photo031.jpg - a bird from Germany (LINK NOW BROKEN)
http://www.dutchbirding.nl/pics/gwfgoose01.jpg - a bird from the Netherlands (LINK BROKEN TEMPORARILY - ?)

The large GW Geese that I see in Fort Worth - whatever taxon they are - have large, robust, strongly orange bills as juveniles. This bill color can be retained well into the early Spring - even after acquiring a significant amount of white feathering at the bill base. These birds are slightly darker on the upperparts and neck than the smaller frontalis, and thus would appear clearly darker in comparision to albifrons (the form with the palest upperparts.) Below, they are typically very pale on the lower breast and belly, and initially on the flanks - but they seem to replace the juvenile flank feathers in the late winter, and the 2nd-generation feathers are much darker - perhaps as dark as the the flank feathers of flavirostris. Adults are similar but have varying amounts of black barring across the belly (usually not very extensive.) The tail pattern has been mentioned as a good ID feature for separating flavirostris from albifrons - but I wonder if the sample size has been large enough to evaluate this properly? Even with the rather small sample I've been able to check, flavirostris does appear to have white tips to the retrices that are much narrower and with less "bleed" up the outer edge than on albifrons. My limited sample of the large Texan birds indicates that the tail pattern is somewhat variable; most have more white than flavirostris but less than most albifrons. This is a rather small difference except in extreme examples, and at least one Texan bird has appeared to have the white tips as small as that stated as typical for flavirostris. Another feature mentioned for flavirostris is the thinner white flank line where the wing-coverts meet the flanks; in juveniles and some adults this line can appear non-existent while on albifrons it seems to be prominent in all ages. The large Texan birds are variable in this regard, but at least one first-winter individual seems to show no flank line at all. The large Texan birds seem closer to albifrons in the prominence of the pale edges to the scaps and tertials - but the fresh juv. Fort Worth bird in early Winter seems to be almost unmarked in this regard - similar to typical juv. flavirostris.

The Nearctic GWFG breed/molt in close proximity with large numbers of other Nearctic forms of goose (Canada, Brant, Snow) - and those wintering in Texas undertake some of the longest migrations of all the Nearctic geese. Little is published on the GWFG breeding east of Yukon Province, and it may well be that the ratio of frontalis to gambeli(?) is much different to that found in the stronghold of frontalis west of the Yukon. Thus these larger forms are as likely to be vagrants to Eurasia/eastern North America as are those aforementioned Nearctic goose taxa - all of which are found in those regions with varying levels of frequency; indeed frontalis should be occurring fairly regularly - but presumably is undetectable among albifrons?
In summary, I feel that imm. gambeli/elgasi (and perhaps frontalis? - I have limited detailed experience with them) are much more like flavirostris than are albifrons, and could lead to mis-identifications in Eurasia and eastern North America. My tentative conclusion is that the color of the breast and central belly is a key means of separating flavirostris from a potential gambeli/elgasi on a bird that has a large orange bill, darker upperparts and flanks, smaller white tips in the tail (than albifrons) and a limited white flank line.

. 1887. Checklist of North American Birds.
AOU. 1895. Checklist of North American Birds. 2nd ed.
AOU. 1910. Checklist of North American Birds. 3rd ed.
AOU. 1931. Checklist of North American Birds. 4th ed.
AOU. 1957. Checklist of North American Birds. 5th ed.
AOU. 1982. 34th suppl. to the AOU Checklist of North American Birds. Suppl to the Auk 99, no. 3, July 1982.
AOU. 1983. Checklist of North American Birds. 6th ed.
Baird, S.F,. J. Cassin, and G, N, Lawrence. 1858. Reports of explorations... to the Pacific Ocean.l 9 part 2, Birds.
Banks, R. C. 1983. A Review of the Nomenclature of Populations of the Greater White-fronted Goose, Anser albifrons (published?)
Bellrose, F. C. 1976. Ducks, Geese & Swans of North America. 2nd ed.
Coues, E. 1882. Check-list of North American Birds. 2nd ed.
Dalgety, C. F. and P Scott. 1948, A new race of the White-fronted Goose. Bull. Brit Orn Club 68: 109-121.
Delacour, J. 1954. The waterfowl of the world. Vol . 1.
Delacour, and S. D. Ripley. 1975, Description of a new subspecies of the White-fronted Goose Anser albifrons. Amer. Mus. Novit. 2565.
Elgas, B. 1970. Breeding populations of Tule White-fronted Geese in Northwestern Canada. Wilson Bull. Vol 82, no. 4.
Ely, C. R. and A. X. Dzubin. 1994. Greater White-fronted Goose. The Birds of North America. No. 131.
Gavin, A. 1947. Birds of Perry River District, NW Territories. Wison Bull. 59: 195-203.
Gmelin, J. 1789. Systema naturae. Vol. 1 part 2.
Hartlaub, G. 1852. descriptions de quelques nouvelles especies d'oiseaux. Rev. et Mag., 2d ser., 4: 1-7.
Hellmayr, C. E. and B. Conover. 1948. Catalogue of birds of the Americas. Part 1, no. 2. Zool. Ser. Field Mus,. Nat. Hist., Vol. 13, part 1, no. 2.
Johnsgard, P. A. 1975. Waterfowl of the World.
Johnsgard, P. A. 1978. Ducks, Geese, and Swans of the World.
Johnsgard, P. A. 1979. Order Anseriformes. In Checklist of birds of the World, Vol. 1, 2nd ed., Mayr and Cottrell, Mus. Comp. Zool.
Kaufman, K. 1994. Point/Counterpoint. Greenland White-fronted Geese - Over-Reported? Birding Vol. 26 no. 6, pp 380-382.
Kemp, J. 2003. Identification of Greenland White-fronted Goose. Birding World Vol. 14 no. 3, pp103-105.
Kortright, F. H. 1942. The ducks, geese, and Swans of North America. Wildlife Man. Inst., Wash, D.C.
Krogman, B. 1978. The Tule Goose mystery - a problem in taxonomy. American Birds 32(2):164-166.
Kuroda, N. 1929. On the subspecific validity of Anser gambelli Harlaub. Condor 31: 173-180.
Lensink, C. J. 1969. The distirbution of recoveries from White-fronted Geese (Anser albifrons frontalis) banded in North America. Bur. Sprot Fisheries and Wildlife. unpub. report.
McAtee, W. L. 1944 Anser gambelli. Auk 61: 294-295.
Madge, S. and H. Burn. 1988. Wildfowl: An identification guide to the ducks, geese, and swans of the world.
Miller, H. W., A Dzubin, and J. T. Sweet. 1968. Distribution and mortality of Saskatchewan-banded White-fronted Geese. Trans. 33rd N. Amer. Wildlife and Nat. Res. Conference, pp101-119.
Oberholser, H. C. 1974. The bird life of Texas.
Palmer, R. S., ed. 1976. Handbook of N, American Birds. Vol. 2.
Peters, J. L. 1931. Checklist of birds of the World. Vol. 1.
Portenko, L. A. 1972. Birds of the Chukchi Peninsula and Wrangel Island.
Scopoli. G. A. 1769. Annus I, historico-Naturlais. Lipsiae.
Stone, W. 1900. A study of the type specimens of birds in the collection of the Academy of Nat. Sciences of Phil.....
Stone, W. 1910. William Gambel, M. D. Cassinia, no. xiv: 1-8.
Swarth, N. S., and H. C. Bryant. 1917. A study of the races of the White-fronted Geese (Anser albifrons) occurring in California. Univ. Calif. Publ. Zool. 17: 209-222.
Texas Ornithological Society. 1995. Checklist of the Birds of Texas. 3rd ed.
Timm, D. E., and R. Sellers. 1981(?). Investigation of the Tule White-fronted Geese in Alaska: 1980 progress report, management implications and plans for 1981. AK Dept. Fish and Game, unpub.
Timm, D. E., M. L. wege, and D. S. Gilmer. 1982. Current status and management challenges for Tule White-fronted Goose. Condor 52: 63-68.
Todd, F.S. 1997. Handbook of Waterfowl Identification.
Todd, W. E. C. 1950. Nomenclature of White-fronted Goose. Condor 52: 63-68.
Vaurie, C. 1965. The birds of the Palearctic Fauna. Non-Passeriformes.
Vaurie, C. 1980. Ducks, Geese and Swans of North America. 3rd. ed.