Terns

species: 
Common Tern
scientific name: 
Sterna hirundo
notes: 

Yellow ring with black 2 numeric code.

note 1 : birds are marked as pullis at the only colony in Northern Spain, located in the Bay of Santander (Cantabria).

note 2 : used digits are a code of two digits, staring in 00 to 99.

note 3 : 20-30 pulli ringed per year.

note 4 : by end-May some 11 pairs for 29 eggs were spotted.

note 5 :

email sighting submit: 
colour-ring type: 
Legring : one, coded.
colour-ring colour (of the c-ring): 
Yellow [Y]
colour-ring code (of the c-ring): 
Two numeric code (2 numbers).
countries where ringed: 
Spain.