Only a few female North American songbirds sing. The female Northern Cardinal does, often while tending to the nest. This may give the male information about when to bring food to the nest. A mated pair shares song phrases, but the female may sing a longer and slightly more complex song than the male.
This folk art bird carving of a Cardinal is carved from Basswood. I used milk paints, various stains, and techniques to age the carving.