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Pre.1 |
The Governments signatory to this Convention, |
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Pre.2 |
Realizing the danger of extermination which threatens certain species of birds and concerned about the numerical decrease in other species, particularly migratory species; and |
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Pre.3 |
Considering that, in the interests of science, the protection of nature and the economy of each nation, all birds should as a matter of principle be protected; |
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Pre.4 |
Have recognized the need to amend the International Convention for the Protection of Birds useful to Agriculture, signed in Paris on 19 March 1902, and have agreed on the following provisions: |
