what are the birds in 12 days of christmas

The song "The Twelve Days of Christmas" is a traditional English Christmas carol that tells the story of a person who receives a series of increasingly extravagant gifts from their true love over a period of twelve days. The birds in the song are part of the gifts given by the true love, and are as follows: 1 partridge in a pear tree, 2 turtle doves, 3 French hens, 4 calling birds, 5 golden rings, 6 geese a-laying, 7 swans a-swimming, 8 maids a-milking, 9 ladies dancing, 10 lords