Common Yellowthroat winters in Central America. In the spring they fly across the Gulf of Mexico and head north to nest in open habitats like marshes, wetland edges, and brushy fields in Michgan and across a lot of North America.
Adult males are bright yellow below, with a sharp black face mask and olive back feathers. Females are a plain olive brown, usually with a brighter yellow throat and under the tail.
The male sings a distinctive witchety-witchety-witchety song,
about 2 seconds long, to defend the territory and attract females. They
give these songs very frequently during summer, averaging as high as 125
songs per hour and sometimes reaching 300 songs per hour.