| health evaluation of free-ranging humboldt penguins (spheniscus humboldti) in peru. | as part of ongoing ecological studies of humboldt penguins (spheniscus humboldti) at punta san juan, ica department, peru, health surveys were conducted in november 1992, 1993, and 1994. in the three surveys, 98 birds in total were handled for examination, and blood was collected for laboratory analysis from 90 of these birds. all birds seemed to be in good condition. body weights of females were significantly lower in 1994 than in the other years. fleas (parapsyllus humboldti) and ticks (ornith ... | 2008 | 18459309 |