Great Bittern

Green ring with a white two alpha-numeric code (starting letter A).

note 1 : all codes begin with 'A' (i.e. 'AA',...).

note 2 : birds are marked in the Brenne (central France) from 2016 onwards. Very few individuals marked as part of a study into habitat use and movements.

note 3 : study in collaboration with Jan Van der Winden.

note 4 :

White ring with a black 3 alpha code, starting letter C'.

note 1 :

White ring with a black 2 alpha-numeric code (on left tarsus) and metal ring (on right tarsus).

note 1 : birds ringed in county Suffolk, UK.

note 2 :

Yellow ring with a black three alpha-numeric code : letter/number/number.

note 1 :

Yellow ring with a black 2 alpha-numeric code.

note 1 : the project started during 2002 in N Italy by Violetta Longoni and Giuseppe Bogliani, Univ. Pavia.

note 2 : for marking scheme info. , please refer to : stefano.volponi@isprambiente.it

note 3 :

Red ring with white two alpha code.

note 1 : used codes are : AA, AB, AC, AD, AE, AH, AJ, AK, AL, AM, AN, AO, AP, AS, AT, AU, AW, AX, AY, AZ, JA, JB, JC, JD, JE, JH, JJ, JK, JL, JM, JN, JO, JP, JS, JT, JU, JW, JX, JY, JZ, ZA, ZB, ZC, ZD, ZE, ZH, ZJ, ZK, ZL, ZM.
note 2 : during the field season 2002-2003 some 30 bitterns wree ringed with colour rings in Belarus. The birds were also ringed with stainless steel rings of the Belarus Ringing Scheme (series ZA) with the inscription : Belarus Minsk Institute of Zoology.

Blue ring (for male) with white horizontal 3 alpha-numeric code (P01 to P35).

Red  ring (for female) ring without code.

Orange ring with black horizontal 3 alpha-numeric code (Z06-Z35).

note 1 : during 2003 39 nestlings were ringed only with steel rings, while in 2004 2 adult females and 33 nestlings.

note 2 : adult birds have 1 steel ring, 1 blue ring with code and 1 red ring without code.

note 3 : during 2005 29 chicks and 5 adult birds were ringed. Adults bitters were ringed with a steel ring, a red ring (female) or a blue (male) ring without code and 1 orange ring with black horizontal alphanumeric code (Z01-Z05).

note 4 :

Yellow ring with a black two alpha-numeric code (starting letter N).

note 1 : website : www.buwa.nl

note 2 : all codes begin with 'N' (i.e. 'N1', 'N2,'... 'NA', 'NB'...).

note 3 : birds are marked in the Netherlands from 2010 onwards. Very few individuals marked as part of a study into habitat use and movements.

note 4 :