Hemmings, N., Bennison, C., & Birkhead, T.R. 2016. Intra-ejaculate sperm selection in female zebra finches. Biology Letters doi: 10.1098/rsbl.2016.0220
Hemmings, N., Birkhead, T.R. 2015. Polyspermy in birds: Sperm numbers and embryo survival. Proc. Roy. Soc. B., doi: 10.1098/rspb.2015.1682
             See also coverage by IFLS , the New York Times and Nicola’s interview with the Royal Society.
Hemmings, N., Birkhead, T.R., Brillard, J.P., Froment, P. & Briere, S. 2014. Timing associated with oviductal sperm storage and release after artificial insemination in domestic hens. Theriogenology. Advance online publication. doi: 10.1016/j.theriogenology.2014.12.022
Bennison, C., Hemmings, N., Slate, J. & Birkhead, T.R. 2014. Long sperm fertilise more eggs in a bird. Proc. Roy. Soc. B., DOI: 10.1098/rspb.2014.1897
Parker, G.A. & Birkhead, T.R. 2013 Polyandry: the history of a revolution. Phil. Trans. R, Soc. B 368 20120335 doi:10.1098/rstb.2012.0335
Mossman, J.A., Slate, J., Birkhead, T.R., Moore, H.D.M. & Pacey, A.A. 2012 Sperm speed is associated with sex bias of siblings in a human population. Asian Journal of Andrology 2012: 1-3
Immler, S., Griffith, S.C., Zann, R. & Birkhead, T.R. 2012 Intraspecific variation in sperm morphometry: a comparison between wild and domesticated zebra finches Taeniopygia guttata. Ibis 154: 480-487
Hemmings, N., West, M. & Birkhead, T. R. 2012. Causes of hatching failure in endangered birds. Biology Letters doi: 10.1098/rsbl.2012.0655
Hemmings, N., Slate, J. & Birkhead, T.R. 2012 Inbreeding causes early death in a passerine bird. Nature Communications 3: 863-870
Meade, J., Hatchwell, B.J., Blanchard, J., Birkhead, T.R. 2012 The population increase of common guillemots on Skomer Island is explained by intrinsic demographic properties. J.Avian Biology 43:001-007
Immler, S., Pitnick, S., Parker, G. A., Durrant, K. L, Lupold, S., Calhim, S. & Birkhead, T. R. 2011. Resolving variation in the reproductive trade-off between sperm size and number. PNAS, 108: 5325-5330
Birkhead, T. R., Hemmings, N., Spottiswoode, C. N., Mikuclica, O., Moskat, C., Ban, M. & Schulze-Hagen, K. 2011. Internal incubation and early hatching in brood parasitic birds. Proc. R. Soc. B., 278: 1019-1024
Topfer, T., Haring, E., Birkhead, T. R., Lopes, R. J., Severinghaus, L. L., Martens, J. & Packert, M. 2011. A molecular phylogeny of bullfinches Pyrrhula Brisson, 1760 (Aves:: Fringillidae). Molecular Phylogenetics and Evolution, 58: 271-282
Lupold, S., Wistuba, J., Damm, O., Rivers, J. W. & Birkhead, T. R. 2011. Sperm competition leads to functional adaptations in avian testes to maximise sperm quality and quantity. Reproduction, 141: 595-605
Birkhead, T.R., Hall, J., Schutt, E., & Hemmings, N. (2008). Unhatched eggs; methods for discriminating between infertility and early embryo mortality. Ibis 150: 508-517
Birkhead, T.R., Schutt, E., & Hemmings, N. (2008). Parthenogenesis in a passerine bird, the zebra finchTaeniopygia guttata. Ibis 150: 197-199