Mackinac Island Spring 2021
Season Summary
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.
Display
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 25th to June 30th
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
Site Weather
Mackinac Island Spring 2021
The Mackinac Straits area is a concentration point for migrating birds every spring and fall. In the spring some migrants Island hop from Lighthouse Point, Cheboygan State Park to Bois Blanc, Round and Mackinac Island; then to the upper peninsula. This study is to determine the species and numbers of each species that take this route.
Directions
This is a pilot project counting raptors on Mackinac Island at Fort Holmes (45.858004, -84.616187).
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 spring weather 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. In the fall raptor counts are conducted at Point LaBarbe, near Saint Ignace on the north side of the strait. MSRW also counts Waterbirds utilizing the strait as a migration corridor and/or stopover area.
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.
Support
Help support raptor conservation with a charitable gift to Mackinac Straits Raptor Watch