Resources / Hunting skills & preparation
Does moon phase predict deer movement?
Understand the limits of moon-phase hunting claims, what GPS research found, and why daylight planning is not a solunar prediction.
Published October 16, 2026
Reviewed October 16, 2026
Call (615) 604-3887Read the research in context
Penn State researchers analyzed October GPS locations from adult female deer in three Pennsylvania state forests during 2015 and 2016. Their analysis found no statistically or biologically significant movement difference attributable to the moon-phase categories studied.
That is evidence against a simple moon-phase shortcut in that dataset, not proof that every lunar question has been settled for all deer everywhere. The article notes that previous research results were mixed and explains the particular animals and periods analyzed.
Source: Penn State Deer-Forest Study: Wandering in the Moonlight; TWRA: Deer Seasons and Regulations; TWRA: In-person Hunter Education
Do not confuse moonlight with a calendar guarantee
A bright moon can change what you can see outdoors without establishing when a legal deer will appear at a particular location. Claims that a full moon always ruins the next morning or guarantees midday success go beyond this evidence.
Use actual observations, permission, habitat knowledge, weather, and your available time when planning. Never let a moon chart override visibility, a safe backstop, or current legal hunting hours.
Source: Penn State Deer-Forest Study: Wandering in the Moonlight; TWRA: Deer Seasons and Regulations; TWRA: In-person Hunter Education
Know what this website calculates
Country Boy Trades’ movement bands are based on sunrise and sunset. They do not calculate moon-based major or minor solunar periods or measure deer feeding. Selecting a date changes the daylight plan, not a live wildlife tracking feed.
If another service provides solunar times, inspect its methodology and avoid reading precision of display as proof of accuracy. A minute-by-minute schedule can look authoritative without predicting the individual deer you might encounter.
Source: Penn State Deer-Forest Study: Wandering in the Moonlight; TWRA: Deer Seasons and Regulations; TWRA: In-person Hunter Education
Checklist
- Check what animals and dates a study covers.
- Avoid full-moon guarantees.
- Distinguish daylight bands from solunar periods.
- Verify legal hours with TWRA.