Iowa's deer face a silent killer. Epizootic Hemorrhagic Disease is sweeping through local herds.

The disease is spread by tiny biting midges, or 'no-see-ums,' which thrive in late summer heat.

Infected deer suffer from high fevers, often seeking out water sources to cool down before dying.

Death typically occurs within 8 to 36 hours after the first clinical signs appear.

Hot, dry summers lead to stagnant water, creating the perfect breeding ground for infected midges.

Severe outbreaks can decimate local populations, leading to reduced harvest quotas and hunter success.

Look for swelling of the tongue, neck, or head, and a lack of fear toward humans.

A hard frost is the only cure for the outbreak, as it kills off the midge population.

The Iowa DNR uses an online reporting tool to track EHD activity across the state.

Most populations bounce back within 2-3 years, but localized losses can be near 90%.

Report dead deer found near water to the DNR to help scientists manage future outbreaks.