The breeding season of the flightless cormorant Nannopterum harrisi at Cabo Hammond, Fernandina
In: The Ibis, Jg. 125 H. 2, S. 221-223
Foraging strategies of the marine iguana, Amblyrhynchus cristatus
In: Behavioral Ecology and Sociobiology, Jg. 18 H. 4, S. 259-266The mating systems of pinnipeds and marine iguanas: convergent evolution of polygyny
In: Biological Journal of the Linnean Society, Jg. 21, S. 209-216