On April 1, International Migratory Bird Day  is marked as an environmental holiday in the world. It is focused  on preserving the diversity and number of birds.
On April 1, 1906, the International Convention on Conservation of Birds was signed. International  Migratory  Bird Day has been  marked in the United States since 1984, and has been celebrating  all over the world.
This holiday is also included in the environmental calendar of Armenia.
There are about 9800 species of birds in the world. Armenia has a rather rich bird species compared to its small territory. About 376 of birds species have been found and studied throughout Armenia.
While there are no endemic species in Armenia, yet several dozen semi-desert and alpine species have been assessed as critically endangered, endangered or vulnerable.