The poem
THE WINTER it is past, and the summer comes at last And the small birds, they sing on ev’ry tree; Now ev’ry thing is glad, while I am very sad, Since my true love is parted from me.
The rose upon the breer, by the waters running clear, May have charms for the linnet or the bee; Their little loves are blest, and their little hearts at rest, But my true love is parted from me.
The Irish song "The Curragh Of Kildare" has virtually the same lyrics. If they came first then they have been tidied up a little by Burns. They lack the charming naivety of what I consider to be the original.
Is it Scottish or Irish? Jean Redpath sings an additional verse, clearly not written by Burns,but not to the Irish melody. I know there was a great deal of cross fertilisation generally between the two.