How is the song of a female White-crowned Sparrow typically described compared to a male's performance?

Answer

Quieter and more variable

When a female does sing, her song is usually reported as being quieter and more variable than the male's standard vocal performance.

How is the song of a female White-crowned Sparrow typically described compared to a male's performance?
birdappearancefemaleWhite-Crowned Sparrowmale