Waterbirds Fall 2021
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.
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.
August 1st to December 31st
The time shown in the top row is the start of the one hour period.
Choose a date to load the hourly table for that day. Only days that have data are shown.
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.
- 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.
Waterbirds Fall 2021
The Mackinac Straits area is a concentration point for migrating birds every spring and fall.
The Waterbird count is conducted from McGulpin Point on the west side of the peninsula and Graham Point on the north side of the Straits on alternate days in 2020. To McGulpin Point: Take Central Ave. west from Mackinaw City to the corner of Headlands Rd., turn north and follow the road to the waters edge to find the Waterbird Counter. Graham Point is at the south end of N. State St. (where the road ends) in St. Ignace.
Mackinac Straits Raptor Watch
Because of its geography, the Straits of Mackinac is one of the best places in the country for studying raptors in both the spring and fall migration seasons. Depending on conditions, the Mackinac Straits Raptor Watch operates on one of two sites near Mackinaw City, MI that are about a mile apart from each other.
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.
Help support raptor conservation with a charitable gift to Mackinac Straits Raptor Watch