Stone-curlew

species: 
Stone-curlew
scientific name: 
Burhinus oedicnemus
notes: 

Yellow ring with a black three alpha-numeric code,
starting letter "J" followed by two numbers (on right tibia) and metal ring (on left tarsus).
OR

letter "J"/ number/letter (on right tibia) and metal ring (on left tarsus).
OR

letter "J"/ letter/number (on right tibia) and metal ring (on left tarsus).

note 1 : codes: J01-J65 and J0A-J9Z and JA0-JZ9. Minimum 12 have been used between 2022 and 2023. 07. 27.

note 2 : metal ring is on left tarsus. 

note 3 : old project with white ring :  https://cr-birding.org/node/1454

note 4 : from 2023 an additional one or two green ring(s) will be added.

note 5 :

colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Three alpha-numeric code (3 letters/numbers).
countries where ringed: 
Hungary.