Birds are a common theme for stamps in different countries. This one arrived a couple of weeks ago on a postcard (a bit damaged, alas), and it caught my eye immediately. I was issued on 7 October 1982, honouring Francis of Assisi, saint patron of animals and environment. See here the FDC.
More eye-catching birds. These stamps are called Colourful Celebrations. They are included on a sheet featuring digital designs of shapes, flowers and birds. The Mexican technique of papel picado ('pierced paper'), used in all kind of celebrations, is the inspiration. More information here.