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Ring size guide - Birds of Prey

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

Merlin(M), Sparrowhawk(M).

R - 7.1mm

Merlin(F), Hobby(M), Little Owl, Hen Harrier(M), Sparrow-hawk(F), American Kestrel.

S - 7.6mm

Montagues Harrier, Scops Owl, Hobby(F), Kestrel.

T - 8.7mm

Burrowing Owl.

Large: closed & split aluminium ring sizes

U - 9.5mm

Hen Harrier(F), Marsh Harrier, Coopers Hawk(M), Barn Owl, Tawny Owl, Short-Eared Owl.

V - 11.0mm

Goshawk(M), Honey Buzzard, Barbary Falcon(M), Coopers Hawk(F), Peregrine Falcon(M), Red-Shouldered Hawk(M).

W - 12.7mm

Goshawk(F), Peregrine Falcon(F), Common Buzzard, Rough-Legged Buzzard, Gyr Falcon(M), Lanner, Lugger, Red Kite, Barbary Falcon(F), Harris Hawk, Prairie Falcon, Red-Shouldered Hawk(F), Saker Falcon, Swainson's Hawk, Caracara(Mexican Eagle).

X - 14.3mm

Red-Tailed Buzzard(M), Gyr Falcon(F), Ferruginous Hawk(M).

Y - 15.8mm

Red-Tailed Buzzard(F), Ferruginous Hawk(F), Osprey, Bengal Eagle Owl, Snowy Owl.

Z - 19.0mm

European Eagle Owl, American Golden Eagle.

ZA - 25.4mm

European Golden Eagle,


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 2016 bird rings is Dark Blue

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We know you need a trusted brand and our bird rings not only deliver great value for you money but quality from experience too.

Acknowledged as the best makers we supply to organisations clubs and individual breeders and understand about good husbandry of your valuable birds.

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