email a friend
printable version
Reiser's Tyrannulet Phyllomyias reiseri
BirdLife is updating this factsheet for the 2016 Red List
Please email us with any relevant information

This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

Taxonomic source(s)
SACC. 2006. A classification of the bird species of South America. Available at: #

Xanthomyias reiseri Collar and Andrew (1988)

Distribution and population
This species inhabits the arid interior of east Brazil (south Piauí, south Goiás, Bahia, Minas Gerais, Distrito Federal and east Mato Grosso do Sul) and north-east Paraguay (Concepción and possibly Amambay) (Ridgely and Tudor 1994).

Population justification
The global population size has not been quantified, but the species is described as uncommon and very local (del Hoyo et al. 2004).

Trend justification
The population is suspected to be in decline owing to severe fragmentation and destruction of cerrado woodland (del Hoyo et al. 2004).

Although virtually unknown, the species has been found foraging mostly in the canopy and subcanopy (but also the understorey) of gallery and tall dry forest (where it frequently joins mixed species flocks) within the cerrado region at elevations of 700-1,000 m (Ridgely and Tudor 1994, Stotz et al. 1996), and the tropical dry forests of the São Francisco drainage (da Silva 1996).

This species may be suffering from the extensive destruction of cerrado habitats for agricultural conversion (especially through overgrazing and Eucalyptus plantations), and may be affected by fire spreading from adjacent grasslands and farms. Its dry forest habitats are also under constant pressure of deforestation mainly for the charcoal industry, agriculture and Eucalyptus plantations.

da Silva, J. M. C. 1996. New data support the specific status of Reiser's Tyrannulet, a central Brazilian endemic. Bulletin of the British Ornithologists' Club 116: 109-113.

del Hoyo, J.; Elliott, A.; Christie, D. 2004. Handbook of the Birds of the World, vol. 9: Cotingas to Pipits and Wagtails. Lynx Edicions, Barcelona, Spain.

Ridgely, R. S.; Tudor, G. 1994. The birds of South America. University of Texas Press, Austin, Texas.

Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Butchart, S., Ekstrom, J., Fisher, S., Harding, M.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2016) Species factsheet: Phyllomyias reiseri. Downloaded from on 22/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 22/10/2016.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Least Concern
Family Tyrannidae (Tyrant-flycatchers)
Species name author Hellmayr, 1905
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 650,000 km2
Country endemic? No
Links to further information
- Additional Information on this species