White ring with a black three alpha-numeric code, starting letter 'M'.
note 1 :
Yellow ring with a black two alpha-numeric code, starting letter 'E'.
Orange ring with a black two alpha-numeric code, starting letter 'C'.
White ring with a black four alpha-numeric code, starting letter 'V'.
note 1 : : about 180 pulli were ringed in the nests in 2006-2008.
White ring with a black four alpha-numeric code, starting number '0'.
Orange ring with a black three alpha-numeric code, starting number '0'.
White ring with a black four alpha-numeric code, starting number '5'.
note 1 : a code can be 515X.
note 2 :
Green ring with a white three alpha-numeric code, starting number '5'.
Orange ring with a black three alpha-numeric code, starting number '5'.
White ring with a black four alpha-numeric code, starting letter 'F'.
note 1 : project started during 2012.