van Dongen, W. F. D.; White, J.; Brandl, H. B.; Moodley, Y.; Merkling, T.; Leclaire, S.; Blanchard, P.; Danchin, E.; Hatch, S. A.; Wagner, R. H.: Age-related differences in the cloacal microbiota of a wild bird species. BMC Ecology 13, 11 (2013)
Why do primates have big brains? In the Panamanian rainforest, scientists pitted large-brained primates against smaller-brained mammals to find out who was the smartest forager