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. Bg023.16-80
    Wns Number
    BG023.16
    Country / Post
    Bulgaria
    Date of Issue
    October 07, 2016
    Subject
    WIKI Loves Earth
  2. 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
  3. Bg028.15-80
    Wns Number
    BG028.15
    Country / Post
    Bulgaria
    Date of Issue
    September 16, 2015
    Subject
    Greetings postage stamps II
  4. Bg045.14-80
    Wns Number
    BG045.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Icterine warbler - Hippolais icterina
  5. Bg044.14-80
    Wns Number
    BG044.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Black lark - Melanocorypha yeltoniensis
  6. 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
  7. Bg042.14-80
    Wns Number
    BG042.14
    Country / Post
    Bulgaria
    Date of Issue
    October 25, 2014
    Subject
    Fauna - Song Birds - Bohemian waxwing - Bombycilla garrulus
  8. Bg023.13-80
    Wns Number
    BG023.13
    Country / Post
    Bulgaria
    Date of Issue
    May 22, 2013
    Subject
    Ecology
  9. Bg013.11-80
    Wns Number
    BG013.11
    Country / Post
    Bulgaria
    Date of Issue
    June 10, 2011
    Subject
    Regions of Bulgaria - The Northcentral Region
  10. Bg008.09-80
    Wns Number
    BG008.09
    Country / Post
    Bulgaria
    Date of Issue
    March 02, 2009
    Subject
    Ecology - Balkan Mountain - Joint issue Bulgaria-Serbia