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Keywords: Birds, Perches, Birdsongs, Songs, Chirping, Trees, Funny, Humor, Humour, Branches, Cartoons, Animals, Leaves, Retro, Clip, Art, Retro Clipart, Forties, Fifties, Graphics, Drawings, '40s, '50s, Vector, Scalable, Advertising, Classic, 1940's, 1950's, Vintage, Nostalgia, Americana