$Spheniscus [demursus] humboldti Sibley & Monroe,1990,Distribution and Taxonomy of Birds of the World,p.319.
Marine;pelagic on migration.Nests on beaches,hills of sand or clay,in forest or on grassy slopes. Inshore feeder.
"Arrival at colony Aug/Sept;laying in Sept/Oct." (HBW,1,p.159)
Migratory,moving north from April to August,after completing moult. In East reaches northern Argentina and southeast Brazil at 23°S. In west as far not as 30°S. Pre-moult period at sea ca. 1 month.Vagrant to south Brazil,Australia,New Zealand and islands in South Atlantic.