Maternal investment and sex-allocation in the Galapagos fur seal, Arctocephalus galapagoensis
In: Behavioral Ecology and Sociobiology, Jg. 19 H. 3, S. 157-164
The mating systems of pinnipeds and marine iguanas: convergent evolution of polygyny
In: Biological Journal of the Linnean Society, Jg. 21, S. 209-216Das Mikroklima im Nistkasten und seine Auswirkungen auf die Nestlinge beim Star (Sturnus vulgaris)
In: Journal für Ornithologie, Jg. 131 H. 1, S. 73-84Milk of the Galápagos fur seal and sea lion, with a comparison of the milk of eared selas (Otariidae)
In: Journal of zoology, Jg. 209, S. 271-277Mutual mother-pup recognition in Galápagos fur seals and sea lions: cues used and functional significance
In: Behaviour, Jg. 78 H. 1, S. 21-42