Population Size of Humboldt Penguins Assessed by Combined Terrestrial and At-Sea Counts

Abstract

Guillermo Luna-Jorquera, Stefan Garthe, Felipe G. Sepulveda, Tanja Weichler, , Population Size of Humboldt Penguins Assessed by Combined Terrestrial and At-Sea Counts, Waterbirds: The International Journal of Waterbird Biology, Vol. 23, No. 3 (2000), pp. 506-510