A new look at Op art: towards a simple explanation of illusory motion Johannes M. ZankerRobin Walker Review 16 March 2004 Pages: 149 - 156
The oldest European fossil songbird from the early Oligocene of Germany Gerald MayrAlbrecht Manegold Short Communication 06 March 2004 Pages: 173 - 177
Worker honey bee pheromone regulation of foraging ontogeny Tanya Pankiw Short Communication 27 February 2004 Pages: 178 - 181
Dinoponera lucida Emery (Formicidae: Ponerinae): the highest number of chromosomes known in Hymenoptera C. S. F. MarianoJ. H. C. DelabieS. G. Pompolo Short Communication 19 March 2004 Pages: 182 - 185
In-nest environment modulates nestmate recognition in the ant Camponotus fellah Tamar Katzav-GozanskyRaphael BoulayAbraham Hefetz Short Communication 11 March 2004 Pages: 186 - 190
Biomineralization in plants as a long-term carbon sink Guillaume CailleauOlivier BraissantEric P. Verrecchia Short Communication 13 March 2004 Pages: 191 - 194
The effect of vegetation density on male mate guarding and extra-territorial forays in the yellow-breasted chat (Icteria virens) Herman L. Mays JrGary Ritchison Short Communication 11 March 2004 Pages: 195 - 198