Recent Spring Surveys Show Increased Mule Deer Numbers and Recruitment in Northeast Montana

GLASGOW – Montana Fish, Wildlife & Parks biologists completed 2026 spring aerial surveys of deer population trends across Region 6 in northeastern Montana. The surveys indicate general increases in most districts.
Every year, Region 6 wildlife biologists conduct aerial surveys across 11 deer trend areas across the region to assess mule deer population trends in total observations and fawn recruitment ratios. Mule deer surveys occur post hunting season, usually in December and January, and again in the spring in March and April to estimate winter survival. The following results focus on the spring survey. Note that the trend areas surveyed are meant to be a sample of the total land area, and deer populations may vary across the region and in individual hunting districts.
An important factor of spring surveys is fawn to adult ratios that indicate fawn recruitment. Fawns that have survived their first winter, which is typically the hardest period in the annual cycle, are considered recruited into the population. These ratios can help inform FWP on overall winter survival, how the population is faring as it enters the summer season, and what the potential for growth might be in the upcoming year.
Northeast Montana region-wide summary
The 2026 winter across northeast Montana was fairly mild, but some areas in the extreme northeast corner had more difficult conditions with heavy snow. However, an early warming event in January melted most of the existing snow and the area experienced an open and mild winter from mid-January to spring, which is often the most challenging months for big game animals. Read more
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