NB. All sizes are given in good faith and are based on the most recent information we have available.
Medium: closed & split aluminium ring sizes
P - 6.0mm
Rn - 7.1mm
Ringed Teal, Garganey Teal.
Sn - 7.6mm
Baikal Teal, Marbled Teal, Bufflehead Duck.
T - 8.7mm
American Wigeon, Bahama Pintail, Carolina, Chilean Pintail, Chiloe Wigeon, European Wigeon, Gadwall, Mandarin, Red-billed Pintail, Laysan Teal, Cheastnut Teal.
Large: closed & split aluminium ring sizes
U - 9.5mm
Argentine Ruddy, Australian Whiteye, Common Whiteye, European Pintail, Hooded Merganser, Javan Whistling, Long Tailed, New Zealand Scaup, North American Ruddy, Ring-necked Duck, Smew, All Shovelers, Tufted Duck, Belgian Bantam(Donvair & Ducal).
V - 11.0mm
African Yellowbill, Barrow's Goldeneye, Canvasback, European Pochard, Eytons Whistling, Indian Spotbill, Philippine Duck, Radjah Shelduck, Red-billed Whistling, Red-breasted Merganser, Red-crested Pochard, Rosybill Pochard, Spotted Whistling, White-faced Whistling, White-headed, Stifftail, Goldeneye, Eider, Bantams, Pullets, Pekin Bantam, Rosecombs.
W - 12.7mm
Cuban Whistling, European Eider, European Scoter, Goosander, King Eider, New Zealand Shelduck, Ruddy Shelduck, Lesser Whitefront, Domestic Chickens extra light breed, Guinea Fowl.
X - 14.3mm
Australian Shelduck, Cape Shelduck, European Goldeneye, European Shelduck, Brent Goose, Barnacle Goose, Domestic Chickens light breed, Silkies, Leghorns, Light Sussex. Y - 15.8mm Emperor Goose, Andean Goose, Rhode Island Reds, Birahmas, Marrons, Welsummers.
Y - 15.8mm
Emperor Goose, Andean Goose, Rhode Island Reds, Birahmas, Marrons, Welsummers.
We are currently following the C.O.M. (Confédération Ornithologique Mondiale) colour roster. C.O.M. rings are year colour coded - Our year colour for 2018 bird rings is Red