Selected Publications


Voelker, G., R.C.K. Bowie, and J. Klicka.  2013.  Gene trees, species trees and Earth history combine to shed light on the evolution of migration in a model avian system.  Molecular Ecology 22:3333-3344.


Voelker, G., B. D. Marks, C. Kahindo, U. A’genonga, F. Bapeamoni, L. E. Duffie, J. W. Huntley, E. Mulotwa, S. A. Rosenbaum and J. E. Light.  2013.  River barriers and cryptic biodiversity in an evolutionary museum.  Ecology and Evolution 3:536-545. DOI: 10.1002/ece3.482.


Oatley, G., G. Voelker, T.M. Crowe, and R.C.K. Bowie.  2012.  A multi-locus phylogeny reveals a complex pattern of diversification related to climate and habitat heterogeneity in southern African white-eyes.  Mol. Phylogenet. Evol. 64:633-644.

Voelker, G., and J. E. Light.  2011.  Palaeoclimatic events, dispersal and migratory losses along the Afro-European axis as drivers of biogeographic distribution in Sylvia warblers.  BMC Evol. Biol. 11:163.

Glen, R., R.C.K. Bowie, S. Stolberger and G. Voelker.  2011.  Geographically structured plumage variation among populations of White-headed Black Chat (Myrmecocichla arnotti) in Tanzania confirms the race collaris to be a valid taxon.  J. Ornithology 152:63-70.

Melo, M., R.C.K. Bowie, G. Voelker, M. Dallimer, N.J. Collar and P.J. Jones.  2010. Multiple lines of evidence support the recognition of a very rare bird species ñ the PrÌncipe thrush.  J. Zoology 282:120-129.

Voelker, G., R.K. Outlaw, S. Reddy, M. Tobler, J.M. Bates, S.J. Hackett, C. Kahindo, B.D. Marks, J.C. Kerbis Peterhans and T.P. Gnoske.  2010.  A new species of boubou from the Albertine Rift (Malaconotidae: Laniarius).  Auk 127:678-689. PDF available upon request.

Voelker, G.  2010.  Repeated vicariance of Eurasian songbird lineages         since the late Miocene.  J. of Biogeography 37:1251-1261. PDF available upon request.

Voelker, G., R.K. Outlaw, and R.C.K. Bowie.  2010.  Pliocene forest dynamics as a primary driver of african bird speciation.  Global Ecology and Biogeography 19:111-121. PDF available upon request.

Outlaw, R.K., G. Voelker, and R.C.K. Bowie.  2010.  Shall we chat? Evolutionary relationships in the genus Cercomela (Muscicapidae) and its relation to Oenanthe reveals extensive polyphyly among chats distributed in Africa, India and the Palearctic.  Mol. Phylogenet. Evol. 55:284-292. PDF available upon request.

Voelker, G., S. Rohwer, D. C. Outlaw and R. C. K. Bowie.  2009.  Repeated trans-Atlantic dispersal catalyzed a global songbird radiation.  Global Ecology and Biogeography 18:41-49. [pdf]

Voelker, G., and R. K. Outlaw.  2008.  Establishing a perimeter position: thrush speciation around the Indian Ocean Basin. J. Evolutionary Biology 21:1779-1788. [PDF]

Voelker, G., and J. Klicka.  2008.  Systematics of Zoothera thrushes, and a synthesis of True Thrush molecular systematic relationships.  Mol. Phylogenet. Evol. 49:377-381. [PDF]

Outlaw, D. C., and G. Voelker.  2008.  Pliocene climatic change in insular Southeast Asia as an engine of diversification in Ficedula flycatchers.  J. of Biogeography 35:739-752. [PDF]

Voelker, G., S. Rohwer, R. C. K. Bowie and D. C. Outlaw.  2007.  Molecular systematics of a speciose, cosmopolitan songbird genus: Defining the limits of, and relationships among, the Turdus thrushes.  Molecular Phylogenetics and Evolution 42:422-434. [PDF]

Outlaw, R. K., G. Voelker, and D. C. Outlaw.  2007.  Molecular systematics and historical biogeography of the Rock-Thrushes (Muscicapidae: Monticola).  Auk 124: 561-577.  [PDF]

Klicka, J., G. Voelker, and G. M. Spellman.  2005.  A molecular systematic revision of the true thrushes (Turdinae).  Molecular Phylogenetics and Evolution 34:486-500. [PDF]

Bates, J. M., R. C. K. Bowie, D. E. Willard, G. Voelker, and C. Kahindo. 2004.  A need for continued collecting of avian voucher specimens in Africa: Why blood is not enough.  Ostrich 75:187-191. [PDF]

Voelker, G., and G. M. Spellman.  2004.  Nuclear and mitochondrial DNA evidence of polyphyly in the avian superfamily Muscicapoidea.  Molecular Phylogenetics and Evolution 30:386-394. [PDF]

Outlaw D. C., G. Voelker, B. Mila, and D. J. Girman.  2003.  The evolution of migration in, and historical biogeography of the Catharus thrushes: A molecular phylogenetic approach.  Auk 120: 299-310. [PDF]

Voelker, G.  2002.  Systematics and historical biogeography of wagtails (Aves: Motacilla): Dispersal versus vicariance revisited.  Condor 104:725-739. [PDF]

Voelker, G.  1999.  Dispersal, vicariance and clocks: Historical biogeography and speciation in a cosmopolitan passerine genus (Anthus: Motacillidae).  Evolution 53:1536-1552. [PDF]

Voelker, G.  1999.  Molecular evolutionary relationships in the avian genus Anthus (Pipits: Motacillidae). Molecular Phylogenetics and Evolution 11:84-94. [PDF]

Voelker, G., and S. V. Edwards.  1998.  Can weighting improve bushy trees?  Models of cytochrome b evolution and the molecular systematics of pipits and wagtails (Aves: Motacillidae).  Systematic Biology 47:589-603. [PDF]