Egrets

species: 
Black-crowned Night Heron
scientific name: 
Nycticorax nycticorax
notes: 

White ring with a black four alpha-numeric code.

note 1 :

email sighting submit: 
website information: 
Ringing Center Poland
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
White [W]
colour-ring code (of the c-ring): 
Four alpha-numeric code (4 letters/numbers).
countries where ringed: 
Poland.