August heat is tough on midwest deer

August heat is tough on midwest deer

August heat can indeed be challenging for deer in the Midwest, including white-tailed deer at Record Breaking Ranch. The high temperatures and often dry conditions of late summer create a variety of stressors for these animals. Here are some key points about how August heat affects deer and what they do to cope:

Challenges of August Heat

  1. Hydration Needs:
    • Increased Water Requirements: Deer need more water to stay hydrated in hot weather. They seek out water sources more frequently during high temperatures.
    • Dehydration Risk: Prolonged heat and lack of water can lead to dehydration, which can impact overall health and survival.
  2. Food Availability:
    • Dry Conditions: Late summer can lead to dry conditions that reduce the availability of lush, nutritious forage. Plants may become less palatable and less nutritious.
    • Foraging Challenges: Deer may have to travel further and expend more energy to find adequate food and water, increasing stress.
  3. Heat Stress:
    • Thermoregulation: Deer need to maintain their body temperature. Prolonged exposure to high temperatures can lead to heat stress, affecting their health and behavior.
    • Reduced Activity: To avoid overheating, deer often reduce their activity during the hottest parts of the day, becoming more active during cooler early morning and late evening hours.

Coping Mechanisms

  1. Seeking Shade and Cover:
    • Dense Vegetation: Deer often seek out areas with dense vegetation that provide shade and cooler temperatures.
    • Riparian Zones: Areas near water sources, like streams and rivers, offer both water and cooler microclimates.
  2. Adjusting Activity Patterns:
    • Crepuscular Behavior: Deer are naturally crepuscular, meaning they are most active at dawn and dusk. In extreme heat, this behavior is more pronounced as they avoid the midday sun.
    • Nighttime Activity: Increased nighttime activity can help deer avoid the heat while foraging.
  3. Water Sources:
    • Frequent Visits: Deer will frequent water sources more often during hot weather. Natural sources like rivers, lakes, and ponds are vital.
    • Artificial Sources: In managed areas, providing supplemental water sources, such as wildlife ponds or water troughs, can help deer cope with heat.

Management Considerations

  1. Habitat Management:
    • Water Availability: Ensuring that water sources are available and accessible is crucial. Creating or maintaining ponds, streams, and other water bodies can help.
    • Vegetative Cover: Managing vegetation to provide ample shade and cover can help deer stay cool. This includes maintaining forests, thickets, and riparian buffers.
  2. Food Plots and Supplemental Feeding:
    • Drought-Resistant Plants: Planting drought-resistant forages in food plots can provide a reliable food source during dry conditions.
    • Supplemental Feeding: In some areas, supplemental feeding might be necessary to ensure deer have adequate nutrition during stressful periods.
  3. Monitoring Deer Health:
    • Surveillance: Using trail cameras and conducting regular surveys can help monitor deer activity and health, allowing for timely management interventions if needed.
    • Observation: Observing deer behavior and condition can provide insights into how they are coping with the heat and if additional management actions are required.


The August heat presents significant challenges for deer in the Midwest, but they have adapted behaviors and strategies to cope with the stress. Providing adequate water, maintaining vegetative cover, and ensuring food availability are key management practices that can help deer populations thrive despite the harsh conditions. Understanding and supporting these natural coping mechanisms can contribute to the health and sustainability of deer populations during the hottest part of the year.


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