Geothlypis speciosa

Taxonomy

Assessment Information

Geographic Range

Population

Habitat and Ecology

Threats

Conservation Actions

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Taxonomy [top]

Kingdom	Phylum	Class	Order	Family
ANIMALIA	CHORDATA	AVES	PASSERIFORMES	PARULIDAE

Scientific Name:

Geothlypis speciosa

Species Authority:

Sclater, 1859

Common Name/s:

English

–

Black-polled Yellowthroat

Assessment Information [top]

Red List Category & Criteria:

Endangered B1ab(i,ii,iii,iv,v) ver 3.1

Year Published:

2012

Assessor/s:

BirdLife International

Reviewer/s:

Butchart, S. & Symes, A.

Contributor/s:

Howell, S.

Justification:
This species qualifies as Endangered owing to its very small and declining range in only four known areas. This decline is primarily the result of continuing drainage and water extraction from suitable marsh habitats.

History:

2008	–	Endangered
2004	–	Endangered
2000	–	Endangered
1996	–	Vulnerable
1994	–	Vulnerable

Geographic Range [top]

Range Description:	Geothlypis speciosa is currently known from only four areas in the states of Guanajuato, Michoacán and México, central Mexico. None of these areas have been censused since the 1980s (Stattersfield et al. 1998), when it was quite abundant at Lago Cuitzeo, Michoacán, and still common on the upper río Lerma around Lerma da Villada, San Mateo Atenco and San Pedro Techuchuco, México (an area where it was historically abundant). There are further small populations at Lago Yuriria, Guanajuato, and Lago Pátzcuaro, Michoacán. It has been extirpated from Lago Texcoco, México, and there have been no records from Lago Zumpango, México, or Presa Solis, Guanajuato, since 1966.
Countries:	Native: Mexico
Range Map:	Click here to open the map viewer and explore range.

Population [top]

Population:	The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Population Trend:	Decreasing

Population:

The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.

Population Trend:

Decreasing

Habitat and Ecology [top]

Habitat and Ecology:	It is restricted to lakeshore and river marshes comprising cattails and hard-stemmed bulrushes. It appears to require extensive reedbeds and is not found in degraded habitats like many other Geothlypis species (S. N. G. Howell in litt. 1998). The nesting period is probably March-June.
Systems:	Terrestrial; Freshwater

Threats [top]

Major Threat(s):	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.

Major Threat(s):

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.

Conservation Actions [top]

Conservation Actions:	Conservation Actions Underway None is known. Conservation Actions Proposed Census populations in the four known areas and produce recommendations of the most suitable areas for protection. Survey any suitable habitat near Lago Zumpango.

Conservation Actions:

Conservation Actions Underway
None is known.

Conservation Actions Proposed
Census populations in the four known areas and produce recommendations of the most suitable areas for protection. Survey any suitable habitat near Lago Zumpango.

Citation:	BirdLife International 2012. Geothlypis speciosa. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 May 2013.
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