- The marshes within its range have been greatly reduced in size, having been drained and planted with crops.
- The marshes in the upper río Lerma are fragmented as a result of drainage and water extraction to supply México City and Toluca.
- The water-levels of Lagos Yuriria, Pátzcuaro and Cuitzeo are falling through drainage and a natural build-up of organic material.
The black-polled yellowthroat (Geothlypis speciosa) is a species of bird in the family Parulidae.
It is endemic to central Mexico and the southwestern Mexican Plateau, in Guanajuato, Michoacán, and México State.
Its natural habitats are freshwater lakes and freshwater marshes. It is an Endangered species, threatened by habitat loss.