We often think of workplace accidents with regards to machinery incidents, transportation crashes or even construction-related falls. The fatal accidents that involve biological causes are often overlooked, however. Workers may be injured or killed when they encounter wildlife on the job. That is exactly what happened to one Illinois man who drowned after he was attacked by a swan at a pond he was tending. That incident occurred two years ago; now, the man's wife is seeking financial damages in connection with his wrongful death.