Knipolegus franciscanus 

Scope: Global
Language: English

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Tyrannidae

Scientific Name: Knipolegus franciscanus Snethlage, 1928
Common Name(s):
English Caatinga Black-tyrant, Brazilian Black-tyrant, Caatinga Black Tyrant
Taxonomic Source(s): del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Contributor(s): Dornas, T. & Olmos, F.
Facilitator/Compiler(s): Butchart, S., Ekstrom, J., Harding, M., Sharpe, C J, Symes, A. & Taylor, J.
This species is estimated to have a larger range than previously thought. It is listed as being of Least Concern on the basis that it does not approach the thresholds for Vulnerable under any of the criteria.

Previously published Red List assessments:

Geographic Range [top]

Range Description:Knipolegus franciscanus occurs in Brazil, where it is known from ten localities: Vale do Rio Palmeiras in Tocantins (Pacheco and Olmos 2006); Pirapora, Januária, Itacarambi, Manga and Montalvânia in Minas Gerais; Iaciara, Serra Geral (untraced) and Nova Roma (Olmos et al. 1997; F. Olmos in litt. 2004) in Goiás; and São Tomé near Campo Formoso and near São Félix do Coribe (F. Olmos and R. Silva e Silva pers. obs. 2003) in Bahia (Lima 1999). Marini et al. (2010) estimate the species's Extent of Occurrence to be c.606,100 km2.

Countries occurrence:
Additional data:
Continuing decline in area of occupancy (AOO):Yes
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:328000
Continuing decline in extent of occurrence (EOO):YesExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:6-10Continuing decline in number of locations:Yes
Extreme fluctuations in the number of locations:No
Upper elevation limit (metres):500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The global population size has not been quantified, but this species is described as 'uncommon' (Stotz et al. 1996).

Trend Justification:  The population is suspected to be in slow to moderate decline owing to on-going habitat destruction. Despite the extensive destruction of dry forest since the early 1960s, populations associated with limestone outcrops in Goiás and Tocantins appear to be stable at present (T. Dornas in litt. 2013). There are, however, intentions by mining companies to explore the potential extraction of agricultural products from these limestone outcrops in the future.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:UnknownContinuing decline of mature individuals:Yes
Extreme fluctuations:NoPopulation severely fragmented:Yes
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:All localities, except São Tomé, are in dry forest patches associated with limestone outcrops of the Bambuí formation. Although the species is associated with rocky outcrops, seasonal movements to forest areas have been noticed (J. F. Pacheco per F. Olmos in litt. 2004).

Continuing decline in area, extent and/or quality of habitat:Yes
Generation Length (years):3.6
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): Limestone-derived soils are the most fertile in the region, so clearance (including state-sponsored projects in Bahia) for pasture and irrigated cultures has been widespread. The destruction of dry forest has been extensive since the early 1960s (T. Dornas in litt. 2013). Around São Felix do Coribe in western Bahia, remaining dry forest patches are very small (all areas less than 200 ha) and this is the case throughout the limestone region. Remaining forest is exploited for timber, mostly for fence poles (Olmos et al. 1997). Satellite imagery from the Paranã valley in Goiás has shown that dry forests declined from 15.8% of the region in 1990 to only 5.4% in 1999, and less than 1% of the remaining fragments are over 100 ha, although they make up 48% of the remaining forest (Andahur 2001). Most of the remaining forest is associated with rocky outcrops where cultivation or pastures are not viable, and vegetation composition there differs to that of forest on flatter ground. There are intentions by mining companies to explore the potential extraction of agricultural products from limestone outcrops in the future (T. Dornas in litt. 2013).

Conservation Actions [top]

Conservation Actions: Conservation Actions Underway
The only protected area harbouring dry forests where the species may occur is Terra Ronca State Park, Goiás.

Conservation Actions Proposed
Monitor population trends through regular surveys. Increase the area of suitable habitat that has protected status. Track the potential threat to limestone outcrops from mining companies and lobby for legislation if required.

Amended [top]

Amended reason: Map revised.

Citation: BirdLife International. 2017. Knipolegus franciscanus (amended version of 2016 assessment). The IUCN Red List of Threatened Species 2017: e.T22700250A110737329. . Downloaded on 24 May 2018.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided