Blue ring with a white three alpha-numeric code.
note 1 : birds are ringed in North-West England, in the counties Cumbria, Lancashire, Merseyside, Greater Manchester and the Isle of Man.
note 2 : used codes are : 4AA - 4ZZ, A4A - Z4Z, 6AA - 6ZZ, AAA - SZZ. in addition A01 - A99, B01-B99, C01-C99 … to Z01-Z99.are used in the Isle of Man.
note 3 :