T
he American crow is very susceptible to the West Nile virus, a disease just recently introduced in North America. American crows usually die within one week of acquiring the disease with only very few surviving exposure. Crows are so affected by the disease that their deaths are now serving as an indicator of the West Nile Virus activity in an area.
Certain species have been considered pests; the Common Raven, Australian Raven and Carrion Crow have all been known to kill weak lambs as well as eating freshly dead animals probably killed by other means. Rooks have been blamed for eating grain in the UK and the Brown-necked Raven for raiding date crops in desert countries.
What makes you feel your crow call is better that others?
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