Greenland
versus European
Bright pink
Yellow/orange,
longer and slimmer
Bill
Dark grey with
tip and sides double as wide
Dark brown with
very narrow white tip and sides
Tail
Broad
Narrow
Flank line
Blue-grey with
prominent broad white tips è bold wing-bar
Dark grey with
narrow white tip è narrow wing-bar
Greater coverts
Prominent broad
fringes è wing-bars
Narrow,
indistinct fringes è uniform wing
Lesser/median
wing-coverts
noticeable fringes
indistinct fringes
Tertials
Whitish fringes
è barred upperparts
Narrow,
indistinct fringes è uniform upperparts
Mantle/
scapulars
albifrons
flavirostris
Kemp J (2001):
Identification of Greenland White-fronted Goose. - Birding World 14: 103-105.