BirdLife Species Factsheet for Brazilian Black-tyrant Brazilian Black-tyrant Knipolegus franciscanus is a dry forest species associated with limestone outcrops at most known locations. It is currently listed as Near Threatened as it was believed to have a declining population which is restricted to ten locations within a moderately small Extent of Occurrence (25,800 km2), thus approaching the thresholds for classification as Vulnerable under criterion B. Recent remapping of the species’s range based on the data presented in Marini et al. (2010) suggests that the EOO is much larger than was previously estimated (606,100 km2 – see attached map, range as previously mapped is in yellow, revised range in red), which means that it no longer approaches the thresholds for classification as Vulnerable under criterion B – if no other criteria are met or nearly met then it would appear sensible to downlist the species to Least Concern. Comments on this proposed status change are welcomed. Reference: Marini, M. A., Barbet-Massin, M., Lopes, L. E. and Jiguet, F. (2010) Predicting the occurrence of rare Brazilian birds with species distribution models. Journal of Ornithology 151(4): 857-866.
- Africa (197)
- Americas (352)
- Archive (849)
- Asia (313)
- Australia (41)
- AZE (Alliance for Zero Extinction) (16)
- Europe & Central Asia (88)
- Illegal killing of birds (2)
- Middle East (59)
- Pacific (141)
- Species Group (229)
- Taxonomy (161)
Five most recent topics
- Coral-billed Ground-cuckoo (Carpococcyx renauldi): revise global status?
- Green Peafowl (Pavo muticus) – revise global status?
- Black-billed Gull (Larus bulleri): revise global status?
- Moustached Warbler (Acrocephalus melanopogon): request for information.
- Rufous Hummingbird (Selasphorus rufus): revise global status?
- Interactive map: explore the world’s most threatened bird paradises April 20, 2018It might be impossible to save every field and forest on the planet, but by identifying the places that are of great significance to the conservation of the world’s threatened birds, we might be able to save enough to secure the future of all the world’s 10,000+ extant bird species. That’s the thought process behind […]
- Crunch time for saving environment on farmland April 18, 2018As the debate on the next EU budget draws to a close, will Budget Commissioner Oettinger dedicate enough to the environment and climate in the future Common Agricultural Policy (CAP) to avert disaster? Biodiversity is in freefall in Europe. Stories of the collapse of insects and birds, mostly related to intensive agriculture, have been hitting […]
- How do we spread word about the biodiversity crisis? Experts weigh in. April 16, 2018How do we raise awareness about the biodiversity crisis facing the world? This was the problem put to six experts (including Sir David Attenborough) at a panel held at BirdLife’s Cambridge office, the Cambridge Conservation Initiative, on 12 April. It’s a tough one. Right now, species are going extinct at a rate up to 1,000 […]
- Interactive map: explore the world’s most threatened bird paradises April 20, 2018