The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

All registered stamps issued by Bulgaria with theme "Birds - General"

  1. Bg037.17-80
    Wns Number
    BG037.17
    Country / Post
    Bulgaria
    Date of Issue
    October 21, 2017
    Subject
    Fauna - 'We, the Sparrows' - Moineau soulcie (Petronia petronia)
  2. Bg036.17-80
    Wns Number
    BG036.17
    Country / Post
    Bulgaria
    Date of Issue
    October 21, 2017
    Subject
    Fauna - 'We, the Sparrows' - Moineau domestique (Passer domesticus)
  3. Bg035.17-80
    Wns Number
    BG035.17
    Country / Post
    Bulgaria
    Date of Issue
    October 21, 2017
    Subject
    Fauna - 'We, the Sparrows' - Eurasian tree sparrow (Passer montanus)
  4. Bg034.17-80
    Wns Number
    BG034.17
    Country / Post
    Bulgaria
    Date of Issue
    October 21, 2017
    Subject
    Fauna - 'We, the Sparrows' - Spanish sparrow (Passer hispaniolensis)
  5. Bg023.16-80
    Wns Number
    BG023.16
    Country / Post
    Bulgaria
    Date of Issue
    October 07, 2016
    Subject
    WIKI Loves Earth
  6. Bg019.16-80
    Wns Number
    BG019.16
    Country / Post
    Bulgaria
    Date of Issue
    September 13, 2016
    Subject
    Joint issue Bulgaria and Israel - Bird Migration - White Stork
  7. Bg028.15-80
    Wns Number
    BG028.15
    Country / Post
    Bulgaria
    Date of Issue
    September 16, 2015
    Subject
    Greetings postage stamps II
  8. Bg045.14-80
    Wns Number
    BG045.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Icterine warbler - Hippolais icterina
  9. Bg044.14-80
    Wns Number
    BG044.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Black lark - Melanocorypha yeltoniensis
  10. Bg043.14-80
    Wns Number
    BG043.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Rufous-tailed scrub robin - Erythropygia galactotes