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Brockway Spring 2023

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
March 1st to July 31st

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-E
Turkey Vulture-W
Golden Eagle-E
Golden Eagle-W
Northern Harrier-E
Sharp-shinned Hawk-E
Sharp-shinned Hawk-W
Show More Species

Site Weather

Brockway Spring 2023

Situated less than a mile south of Lake Superior near the town of Copper Harbor, Brockway is the most northerly and prominent of a series of parallel ridges running along the spine of the Keweenaw. For hawks carried along the peninsula on southerly winds, it acts as a funnel for movement further toward Keweenaw Point, where most appear to turn around and come back down the Keweenaw Peninsula. This two-way flow of hawks past Brockway Mountain, and the viewing location at 1328 ft (726 ft above Lake Superior level) combine to produce two things very uncommon at hawk-watching locales: hawks migrating in two directions simultaneously, and eye level views of the birds! The Count Site is located at West Bluff overlook.


The Brockway Mountain Drive is a seasonal road and it becomes part of the snowmobile trail system in the winter. Depending on the year, it becomes drive-able at different times. So, we post the road conditions on our website and as soon as vehicles can drive up you will know. The info is also posted on our Facebook page. Now some folks hike up and when there is snow, snowshoe or ski up, but just understand that it is a very hilly, 3.5 mile trek and you may be sharing the space with snowmobilers. The count site is at the top of Brockway Mountain. There is no power, phones or water service. There are very well maintained pit toilets available to visitors, otherwise there are no buildings up there. Bring a chair and pack a lunch if you plan to stay awhile. June can be buggy, so bug repellent is good to have too. As with other high places, it is usually windy at the top of Brockway Mountain. It is typically a few degrees cooler than in Copper Harbor too. Layering clothes is always a good idea and a warm jacket is suggested. The weather can change very quickly so be prepared for anything. Our counter, Tim, is happy to answer questions about the birds and assist in IDs. When he is not busy counting, he visits with guests and offers a wealth of birding information. By the way, he likes cookies. The shack area is the counter's domain. The spotting scope is not there for public use. Please do not handle tools or remove objects from the area. There are brochures and informative handouts available as well as a book for visitors to sign.

Keweenaw Bird Research Group

Our mission is to observe, research and conduct surveys of the birds that live in and migrate through the Keweenaw Peninsula and the Lake Superior region in order to collect and share important data as well as employ it for education and conservation.

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.


The research projects conducted by the KBRG are supported by donations, sponsors and fundraising events. Your gifts are tax deductible.