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Eagle Migration Count Fall 2023

Season Summary

Species Count
Total Count

Species Composition

Species composition changes over time depending on weather, seasons, and many other factors. This chart displays the composition over a time period you select.

Click on pie pieces to see more detail. If there are more than seven species, click on "Other" to see a breakdown of the rest.


Many sites have a protocol that is designed to maximize finding particular species. If you select "Focus Species," only these species will be shown.

Date Selector

The control box below the pie chart lets you select a date period for the chart.

You can push the buttons "1d," "1w," or "1m" to zoom the graph to 1 day, 1 week, or 1 month.

The graph shows the overall volume seen on each day. You can drag the sliders on each side of this graph to adjust the start and end dates.

Species Composition
September 20th to November 15th

Drag the Sliders Below to Change the Dates Shown

Hourly Data

The time shown in the top row is the start of the one hour period.

Select Day

Choose a date to load the hourly table for that day. Only days that have data are shown.

Daily Counts

These charts show which species are most numerous at different parts of the season. Hover your mouse over a chart to see the number for a given day. The right column shows season totals and the left side shows the maximum for a single day. Each graph is scaled so that the single-day maximum is the highest point on the chart.

Sort By
  • Focus Species: Show the highest priority species at the top of the list.
  • Taxonomic Order: Sort the species by their scientific classification.
  • Alphabetic Order: Sort the species by their common name.
  • Abundance: Sort the species with the largest number counted at the top.

Daily Counts

Turkey Vulture
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
American Goshawk
Unidentified Accipiter
Show More Species

Eagle Migration Count Fall 2023

This site is located along a major Golden Eagle flyway and their migrations can be tracked from the same place in spring and autumn. This monitoring site is managed by the Rocky Mountain Eagle Research Foundation. Monitoring site is manned by volunteers. Migration is more pronounced on days with SW and W winds. The count is conducted from Sept 20 to Nov 15 in the fall, and from Mar 1 to Apr 22 in the spring. The location in Hay Meadow, along the banks of the Kananaskis River offers 360 degree views of the surrounding ridges, which the eagles and other raptors follow on their migration both spring and fall.


The Hay Meadow site is located in the valley of the Kananaskis River in the front ranges of the Canadian Rockies. To find the monitoring site, take the TransCanada Highway (Highway 1) west from Calgary, and drive S on Highway 40 (Kananaskis Trail) for ~25 km. Turn right at the sign for Kananaskis Village and Nakiska, and drive W for 1 km. Pass the turn to Kananaskis Village on the left and almost immediately turn right onto a good gravel road. The turning is sign posted "Stoney Trailhead." A parking area is just a few hundred m down this road. Park in the parking area and walk past the gate. Take the first trail to the right through the forest. The site is 1 km from the parking lot down this trail.

Rocky Mountain Eagle Research Foundation

Since 1992, Rocky Mountain Eagle Research Foundation (RMERF) volunteers have performed annual raptor migration counts at the same site location in the Kananaskis Country, Alberta, spring and fall; significantly providing data for the understanding of and amazement in watching migrating Golden Eagles.

About the Data

All data displayed on this site are preliminary and have not yet undergone quality control. Written permission is required to use the data.