The breeding season of the flightless cormorant Nannopterum harrisi at Cabo Hammond, Fernandina
In: The Ibis, Jg. 125 H. 2, S. 221-2231983
Time budget in Galápagos fur seal pups: the influence of the mother's presence and absence on pup activity and play
In: Behaviour, Jg. 92, S. 302-3211985