Postmortem findings in Magellanic penguins (Spheniscus magellanicus) caught in a drift gillnet.

Drowning may be a challenging diagnosis (e.g., carcass decomposition, predation), but must be considered as a differential in all beach-cast seabird postmortem examinations. To the authors' knowledge this is the largest anatomopathological study based on microscopic examination in drowned penguins.