Examples
Type and size of bird rings recommended by Polish Ringing Centre and used in Poland. This list can be used as a reference for all other bird species ringed around the world.
* F – female, M – male, P – pullus, L – fully grown
* T – type of ring, a – aluminium, s – stainless steel, mm – size in millimetres
| Bird species | Recommended ring size |
| Acanthis flammea | Ka (2.5 mm; 5.0 mm) |
| Acanthis hornemanni | Ka (2.5 mm; 5.0 mm) |
| Accipiter brevipes F* | Fs (7.0 mm; 8.5 mm) |
| Accipiter brevipes M* | Ga |
| Accipiter gentilis F* | Ca |
| Accipiter gentilis M* | Da |
| Accipiter nisus F*, P* | Fs (7.0 mm; 8.5 mm) |
| Accipiter nisus M* | Ga |
| Acrocephalus agricola | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus arundinaceus | Ja |
| Acrocephalus dumetorum | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus melanopogon | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus paludicola | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus palustris | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus schoenobaenus | Ka (2.5 mm; 5.0 mm) |
| Acrocephalus scirpaceus | Ka (2.5 mm; 5.0 mm) |
| Actitis hypoleucos | Js |
| Actitis macularius | Js |
| Aegithalos caudatus | La |
| Aegolius funereus | Fxa, Fs (7.0 mm; 8.5 mm) |
| Aegypius monachus | Aa |
| Alauda arvensis | Ja |
| Alauda leucoptera | Ja |
| Alca torda | Ss |
| Alcedo atthis | Ya |
| Alle alle | Gs |
| Anas acuta | Ps |
| Anas americana | Ps |
| Anas carolinensis | Ps |
| Anas clypeata | Ps |
| Anas crecca | Ps |
| Anas discors | Ps |
| Anas penelope | Ps |
| Anas platyrhynchos | Ss |
| Anas querquedula | Ps |
| Anas strepera | Ps |
| Anser albifrons | Ws |
| Anser anser | Ws |
| Anser brachyrhynchus | Ws |
| Anser erythropus | Ws |
| Anser fabalis | Ws |
| Anthus campestris | Ka (2.5 mm; 5.0 mm) |
| Anthus cervinus | Ka (2.5 mm; 5.0 mm) |
| Anthus hodgsoni | Ka (2.5 mm; 5.0 mm) |
| Anthus petrosus | Ka (2.5 mm; 5.0 mm) |
| Anthus pratensis | Ka (2.5 mm; 5.0 mm) |
| Anthus richardi | Ka (2.5 mm; 5.0 mm) |
| Anthus spinoletta | Ka (2.5 mm; 5.0 mm) |
| Anthus trivialis | Ka (2.5 mm; 5.0 mm) |
| Apus apus | Yxa |
| Apus pallidus | Yxa |
| Aquila chrysaetos | Axa |
| Aquila heliaca | Axa |
| Aquila nipalensis | Bxa |
| Ardea alba | Cs |
| Ardea cinerea | Cs |
| Ardea purpurea | Cs |
| Ardeola ralloides | Ds |
| Arenaria interpres | Hs |
| Asio flammeus | Da |
| Asio otus | Da |
| Athene noctua | Fxa, Fs (7.0 mm; 8.5 mm) |
| Aythya affinis | Ss |
| Aythya collaris | Ss |
| Aythya ferina | Ss |
| Aythya fuligula | Ss |
| Aythya marila | Ss |
| Aythya nyroca P*, M* | Ss |
| Aythya nyroca F* | Ps |