Bonney Butte Fall 2019
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 21st 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.
Bonney Butte Fall 2019
Bonney Butte HawkWatch is located on the southeastern flanks of Mt. Hood in northcentral Oregon. HWI crews count and band migrating raptors here each fall and have done so since 1994 to monitor long-term trends in populations of raptors using this part of the Pacific Coast Flyway through the Cascade Mountains. Annual counts typically range from 2,500-4,500 migrant raptors of up to 18 species. The most commonly seen species are the Sharp-shinned Hawk, Red-tailed Hawk, Cooper's Hawk, Turkey Vulture, and Golden Eagle, but this site is noted for relatively high numbers of Merlins (up to 100 or more per year).
Bonney Butte HawkWatch is located within the Mt. Hood National Forest. High clearance vehicles are recommended for the last 4 miles of the drive. From Portland, head east on I-84 toward Troutdale. Take exit 16 toward Wood Village and turn right onto NE 238th Drive. Continue on NE 238th Drive, which becomes SE 242nd Drive/NE Hogan Drive. After about 3 miles, turn left onto NE Burnside Road/US-26 East and continue for 40 miles. Exit onto US-35 North toward Hood River. After 4.7 miles (just after passing over White River), turn right onto paved NF-48. After 6.8 miles, turn right onto paved NF-4890. After 3.6 miles, at 4-way intersection, turn left onto 4-wheel drive NF-4891, following signs for Bonney Meadows. Keep right at the spurs to stay on NF-4891, and after 4.2 miles (just past Bonney Meadow Campground) park in umarked Bonney Butte parking area on the right side of the road. Hike 0.5 miles up the old lookout tower road (walk around the gate) to the summit. We operate daily 9am-5pm, August 27-October 31, weather permitting.
The mission of HawkWatch International is to conserve our environment through education, long-term monitoring, and scientific research on raptors as indicators of ecosystem health.
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.