Spring Hawk Count 2020
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
February 14th to July 1st
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
Spring Hawk Count 2020
Onondaga Audubon’s Derby Hill Bird Observatory, located on the southeastern corner of Lake Ontario in Oswego County, NY, is one of the premier hawk watches in the Northeastern United States. Hawk counts at the site were started in the early 1970s and since 1979 have been conducted every year in a standardized way. On average 40,000 raptors are counted each spring as they migrate northwards, making this site one of the best spring sites in the country.
Directions
Directions from Syracuse... Take I-81 north to exit 34, which is Route 104. (From North Syracuse, where 481 joins 81, the distance is 22 miles). Turn west on 104. Drive 6 miles to the village of Mexico. Turn north at the traffic light onto Route 3. Drive north on Rt.3 for 4 miles to the intersection with Route 104b. Turn left (west) on Rt.104b and drive a 1/2 a mile to Sage Creek Drive. Turn right (north) on Sage Creek Drive. DHBO is clearly signed in both directions on Rt 104b just before the Sage Creek turn off.
Derby Hill Bird Observatory
Onondaga Audubon’s Derby Hill Bird Observatory, located on the southeastern corner of Lake Ontario in Oswego County, NY, is one of the premier hawk watches in the Northeastern United States.
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.