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 Portugal with theme "Birds - General"

  1. Pt002.19-80
    Wns Number
    PT002.19
    Country / Post
    Portugal
    Date of Issue
    January 28, 2019
    Subject
    Autochthonous Breeds of Portugal - Portuguese Speckled Hen
  2. Pt038.11-80
    Wns Number
    PT038.11
    Country / Post
    Portugal
    Date of Issue
    May 09, 2011
    Subject
    Europa - Forests
  3. Pt037.11-80
    Wns Number
    PT037.11
    Country / Post
    Portugal
    Date of Issue
    May 09, 2011
    Subject
    Europa - Forests
  4. Pt013.10-80
    Wns Number
    PT013.10
    Country / Post
    Portugal
    Date of Issue
    March 08, 2010
    Subject
    2010 International Year of Biodiversity - The Atlantic Forest
  5. Pt016.09-80
    Wns Number
    PT016.09
    Country / Post
    Portugal
    Date of Issue
    February 12, 2009
    Subject
    Bicentenary of Charles Darwin's Birth 1809-2009
  6. Pt014.09-80
    Wns Number
    PT014.09
    Country / Post
    Portugal
    Date of Issue
    February 12, 2009
    Subject
    Bicentenary of Charles Darwin's Birth 1809-2009
  7. Pt061.08-80
    Wns Number
    PT061.08
    Country / Post
    Portugal
    Date of Issue
    June 23, 2008
    Subject
    International Polar Year - Ursus maritimus - Polar bear
  8. Pt060.08-80
    Wns Number
    PT060.08
    Country / Post
    Portugal
    Date of Issue
    June 23, 2008
    Subject
    International Polar Year - Sterna paradisea - Arctic Tern
  9. Pt059.08-80
    Wns Number
    PT059.08
    Country / Post
    Portugal
    Date of Issue
    June 23, 2008
    Subject
    International Polar Year - Oceanites oceanicus
  10. Pt058.08-80
    Wns Number
    PT058.08
    Country / Post
    Portugal
    Date of Issue
    June 23, 2008
    Subject
    International Polar Year - Alca torda

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