Wildlife Habitat
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Gray Fox
Gray foxes are primarily found in southern/southwest Wisconsin and have several notable differences from the more common red fox. Gray foxes have retractable claws (like cats), are excellent tree climbers, and are smaller in size with a gray coat.…
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Deer
Young white-tailed deer, called fawns, are typically born in May and June. The doe may give birth to 1-3 fawns, and they can weigh as little as three pounds at birth. For the first 2-3 weeks after they are born, fawns lack the strength and speed to…
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Coyote
Coyotes usually mate in February or March, and pups are generally born in April. The number of pups in a litter is typically 3-7, but numbers can vary quite a bit. They den in abandoned, existing animal burrows that they modify, or they'll dig a new…
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Cottontail Rabbit
Cottontail rabbits often give birth to multiple litters a year and the young, called kits, can be encountered anytime from spring through fall. The nest is typically a shallow cup scraped into the soil, lined with some of the mother rabbit's fur and…
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Ranavirus
Ranaviruses are a group of viruses that are found worldwide. There are different strains of ranavirus including some strains that can cause severe infections and mortality in amphibians, reptiles and fish. Strains that infect amphibians can cause…
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Wisconsin River Bald Eagle syndrome
Wisconsin River Bald Eagle syndrome is a name given to a specific group of signs which have consistently been found in sick or dead bald eagles in certain locations in Wisconsin, but for which a specific cause of those signs has not yet been found.
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White-nose syndrome in bats
White-nose syndrome (WNS) is a disease of bats that hibernate in caves, mines, and other suitable hibernacula. It is caused by the fungus Pseudogymnoascus destructans (Pd). It was first identified in North America in 2007 in bats in a cave in…
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West Nile virus
West Nile virus (WNV) is a viral disease that was commonly found in Africa, Europe, the Middle East and West Asia. It first appeared in New York in 1999 and quickly spread throughout North America. It was first detected in Wisconsin in 2001. WNV has…
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Warbles (Cuterebra botfly larvae)
Warbles is a term that describes bumps under the skin that are caused by infection with fly larvae. In wild mammals, this condition involves the larvae of the botfly, Cuterebra sp. Cuterebra warbles are most commonly seen in squirrels,…
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Tyzzer's disease (Clostridium piliforme)
Tyzzer's disease is a bacterial infection caused by the spore-forming bacterium, Clostridium piliforme. It is found in muskrats and cottontail rabbits. TRANSMISSION The likely method of transmission is through the ingestion of spores in the…