Journal of Ornithology

, Volume 147, Issue 4, pp 578–590 | Cite as

The forest batis, Batis mixta, is two species: description of a new, narrowly distributed Batis species in the Eastern Arc biodiversity hotspot

Original Article


The forest batis, Batis mixta, is a common bird of the forests of the Eastern Arc Mountains of Tanzania and in some adjacent montane and coastal forests. Through new collecting efforts in most of this range we documented a well-marked change in morphology in the middle of the range. Supplementary genetic studies of the historical population structure suggest connectivity among the south-western and northern/coastal populations, but not between these parapatric groups. It is concluded that two species are involved, and a new name B. crypta is proposed for the south-western populations. A marked genetic break also exists towards B. capensis sola in northern Malawi. The morphologically distinctive form reichenowi in south-eastern Tanzania is genetically nested within B. mixta, and for now we keep it as a subspecies of B. mixta.


Eastern Arc hotspot Montane biogeography Paraphyletic species Phylogeography Platysteiridae 



We thank the Natural History Museum at Tring and the Field Museum for loan of specimens, and the curators in Bonn (R. van Elzen), Leiden (R. Dekker), Nairobi (M. Muchane), Paris (E. Pasquet) and Stockholm (P. Ericson, G. Frisk) for access to their collections. We also thank the Field Museum of Natural History, Museums of Malawi and the Marjorie Barrick Museum for loan of tissues. Fieldwork was supported by grants from the Danish Research Council to J.F. and from the Field Museum and Stellenbosch University to R.B. Laboratory work was supported by grants from the National Research Foundation (South Africa), Department of Science and Technology (South Africa) and Stellenbosch University to R.B. The research complies with current laws in the countries where the work was done. CapeNature is thanked for permission to collect specimens in South Africa and the Tanzanian Commission for Science and Technology and Wildlife Research Institute are thanked for permission to conduct fieldwork and to collect and export specimens. The collections from Tanzania are held in trust at the Zoological Museum, University of Copenhagen.


  1. Baker N, Baker E (2002) Important Bird Areas in Tanzania. Wildlife Conservation Society of Tanzania, Dar es SalaamGoogle Scholar
  2. Bowie RCK (2003) Birds, molecules and evolutionary patterns among Africa’s islands in the sky. Unpublished PhD thesis, University of Cape TownGoogle Scholar
  3. Bowie RCK, Fjeldså J, Hackett SJ, Crowe TM (2004a) Systematics and biogeography of Double-Collared Sunbirds from the Eastern Arc Mountains, Tanzania. Auk 121:660–681CrossRefGoogle Scholar
  4. Bowie RCK, Fjeldså J, Hackett SJ, Crowe TM (2004b) Molecular evolution in space and though time: mtDNA phylogeography of the Olive Sunbird (Nectarinia olivacea/obscura) throughout continental Africa. Mol Phylogenet Evol 33:56–76PubMedCrossRefGoogle Scholar
  5. Bowie RCK, Voelker G, Fjeldså J, Lens L, Hackett SJ, Crowe TM (2005) Systematics of the Olive Thrush Turdus olivaceus species complex with reference to the taxonomic status of the endangered Taita Thrush T. helleri. J Avian Biol 36:391–404CrossRefGoogle Scholar
  6. Bowie RCK, Fjeldså J, Hackett SJ, Bates JM, Crowe TM (2006) Coalescent models reveal the relative roles of ancestral polymorphism, vicariance and dispersal in shaping phylogeographical structure of an African montane forest robin. Mol. Phylogenet. Evol 38:171–188PubMedCrossRefGoogle Scholar
  7. Britton PL (1980) Birds of East Africa. East African Natural History Society, NairobiGoogle Scholar
  8. Burgess ND, Mlingwa COF (2000) Evidence for altitudinal migration of forest birds between montane Eastern Arc and lowland forests in East Africa. Ostrich 71:184–190Google Scholar
  9. Burgess ND, Cordeiro N, Doggart N, Fjeldså J, Hansen LA, Howell K, Kilahama F, Lovett JC, Menegon M, Moyer D, Nashanda E, Perkin A, Stanley W, Stuart S (2006) The biological importance of the Eastern Arc Mountains of Tanzania. Biol Conserv (in press)Google Scholar
  10. Clement M, Posada D, Crandall KA (2000) TCS: a computer program to estimate gene genealogies. Mol Ecol 9:1657–1660PubMedCrossRefGoogle Scholar
  11. Cracraft J (1997) Species concepts in systematics and conservation biology: an ornithological viewpoint. In: Claridge MF, Daway HA, Wilson MR (eds) Species: the units of biodiversity. Chapman & Hall, London, pp 325–339Google Scholar
  12. Dickinson EC (2003) The Howard and Moore complete checklist of the birds of the world, 3rd edn. Princeton University Press, PrincetonGoogle Scholar
  13. Dowsett RJ, Dowsett-Lemaire F (1980) The systematic status of some Zambian birds. Gerfaut 70:151–199Google Scholar
  14. Dowsett RJ, Dowsett-Lemaire F (1993) A contribution to the distribution and taxonomy of Afrotropical and Malagasy birds. Tauraco Press, LiègeGoogle Scholar
  15. Dowsett-Lemaire F (1989) Ecological and biogeographical aspects of forest bird communities in Malawi. Scopus 13:1–80Google Scholar
  16. Fjeldså J, Lovett J (1997) Geographical patterns of old and young species in African forest biota: the significance of specific montane areas as evolutionary centers. Biodiver Conserv 6:325–347CrossRefGoogle Scholar
  17. Fuchs J, Bowie RCK, Fjeldså J, Pasquet E (2004) Phylogenetic relationships of the African bush-shrikes and helmet-shrikes (Passeriformes: Malaconotidae). Mol Phylogenet Evol 33:428–439PubMedCrossRefGoogle Scholar
  18. Grote H (1911) Neue Vogelarten aus Ostafrika. Orn Monatsber 19:162–163Google Scholar
  19. Harris T, Arnott G (1988) The shrikes of southern Africa. Struik, Cape TownGoogle Scholar
  20. Harris T, Franklin K (2000) Shrikes and bush-shrikes. Including wood-shrikes, helmet-shrikes, flycatcher-shrikes, philentomas, batises and wattle-eyes. Helm, LondonGoogle Scholar
  21. Jetz W, Rahbek C, Colwell RK (2004) The coincidence of rarity and richness and the potential signature of history in centers of endemism. Ecol Lett 7:1180–1191CrossRefGoogle Scholar
  22. Lawson WJ (1962) Geographic variation in Woodward’s Batis Batis fratrum (Shelley). Durban Mus Novit 6:220–224Google Scholar
  23. Lawson WJ (1986) Speciation in the forest-dwelling populations of the avian genus Batis. Durban Mus Novit 13:285–304Google Scholar
  24. Lovett JC, Wasser SK (1993) Biogeography and ecology of the rain forests of Eastern Africa. Cambridge University Press, CambridgeGoogle Scholar
  25. Mundy NI, Badcock NS, Hart T, Scribner K, Janssen K, Nadeau NJ (2004) Conserved genetic basis of a quantitative plumage trait involved in mate choice. Science 303:1870–1873PubMedCrossRefGoogle Scholar
  26. Posada D, Crandall KA (2001) Intraspecific gene genealogies: tree grafting into cladograms. Trends Ecol Evol 16:37–45PubMedCrossRefGoogle Scholar
  27. Ricklefs RE, Latham RE (1993) Global patterns of diversity in mangrove floras. In: Ricklefs RE, Schluter D (eds) Species diversity in ecological communities. Historical and geographical perspectives. University of Chicago Press, Chicago, pp 215–229Google Scholar
  28. Romdal TS (2001) Altitudinal distribution and abundance patterns of bird species in the Eastern Arc Mountains, Tan zania. Scopus 21:35–54Google Scholar
  29. Ronquist F, Huelsenbeck JP (2003) MRBAYES 3: Bayesian phylogenetic inference under mixed models. Bioinformatics 19:1572–1574PubMedCrossRefGoogle Scholar
  30. Sinclair I, Ryan P (2003) Birds of Africa south of the Sahara. A comprehensive illustrated field guide. Struik, Cape TownGoogle Scholar
  31. Stevenson T, Fanshawe J (2002) Field guide to the birds of East Africa. Poyser, LondonGoogle Scholar
  32. Swofford DL (2002) PAUP*: phylogeny analysis using parsimony (*and other methods), version 4.0b 10. Sinauer, SutherlandGoogle Scholar
  33. Traylor MA (1986) The Platysteiridae, Puffback Flycatchers. In: Mayr E, Cottrell GW (eds) Check-list of birds of the world, vol 11. Mus. Compar. Zool, Cambridge, pp 376–386Google Scholar
  34. Urban EK, Fry CH, Keith S (1997) Birds of Africa: thrushes to puffback flycatchers, vol 5. Academic, LondonGoogle Scholar

Copyright information

© Dt. Ornithologen-Gesellschaft e.V. 2006

Authors and Affiliations

  • Jon Fjeldså
    • 1
  • Rauri C. K. Bowie
    • 2
    • 3
  • Jacob Kiure
    • 4
  1. 1.Zoological MuseumUniversity of CopenhagenCopenhagenDenmark
  2. 2.DST-NRF Centre of Excellence at the FitzPatrick Institute, Department of Botany and ZoologyStellenbosch UniversityMatielandSouth Africa
  3. 3.Museum of Vertebrate Zoology and Department of Integrative BiologyUniversity of CaliforniaBerkeleyUSA
  4. 4.Dar es SalaamTanzania

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