Home News Archive - MPI for Ornithology The brains of birds synchronize when they sing duets Publications of B. C. Robertson All genres Journal Article (2) Journal Article (2) 2000 Journal Article Carter, K. L.; Robertson, B. C.; Kempenaers, B.: A differential DNA extraction method for sperm on the perivitelline membrane of avian eggs. Molecular Ecology 9 (12), pp. 2149 - 2150 (2000) MPG.PuRe DOI Journal Article Kempenaers, B.; Foerster, K.; Questiau, S.; Robertson, B. C.; Vermeirssen, E. L. M.: Distinguishing between female sperm choice versus male sperm competition: A comment on Birkhead. Evolution: International journal of organic evolution 54 (3), pp. 1050 - 1052 (2000) MPG.PuRe DOI