Quick Answer
The ear size of a whitetail can indicate its age, but only to a certain extent. A deer's ear size is relatively stable from year to year, but changes in ear size can be observed between yearlings and adults. However, the ear size may not accurately determine the age of a deer beyond its third year.
Measuring Ear Size
To determine the ear size of a whitetail, you need to measure the length and width of the ear, typically at the base of the ear. Use a flexible ruler or a measuring tape to take the measurements. A standard guide suggests that yearlings have ears around 7-8 inches (18-20 cm) long, while adult ears can range from 8-11 inches (20-28 cm) in length.
Age Determination
In a study, researchers found that whitetail deer ears tend to grow at a rate of approximately 1 inch (2.5 cm) per year. This growth rate allows us to estimate the age of a deer based on its ear size. For example, a deer with an ear length of 9 inches (23 cm) is likely around 2-3 years old, considering the growth rate and typical ear size at birth. However, the accuracy of this method decreases as the deer ages beyond its third year.
Limitations and Considerations
Keep in mind that ear size can be affected by various factors, such as genetics, nutrition, and environmental conditions. Deer that experience stunted growth or have a lower nutritional intake may have smaller ears, even if they are older. Additionally, the accuracy of ear size as an age indicator decreases as the deer ages, as other physical characteristics, such as antler size and body weight, become more significant indicators of age.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.