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Dinosaur Ridge Spring 2023

Season Summary

Species Count
Total Count

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
February 25th to May 14th

Drag the Sliders Below to Change the Dates 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
Golden Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Northern Goshawk
Bald Eagle
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Site Weather

Dinosaur Ridge Spring 2023

Dinosaur Ridge Hawk Watch is a mountaintop watch site with a 360-degree view, on the east slope of the south Rocky Mountains, 19km WSW of Denver, Colorado. The habitat is shrub-steppe, pinyon-juniper, and prairie. It is the only regularly staffed hawk watch in Colorado and is the best place in the world to see migrating Ferruginous Hawks. Hawk watchers may see 17 species of migrating raptors and it is an excellent site to see rare dark morph buteos including Broad-winged hawk, Swainson’s hawk, Ferruginous hawk, Rough-legged hawk and Red-tailed Hawk. Other raptors we see include Golden and Bald Eagles, Northern harrier, Osprey, Peregrine Falcons, Prairie Falcons, Cooper's and Sharp-shinned Hawks, American Kestrels, Merlin, and Turkey Vultures. Northern Goshawk is uncommon but also counted each season. Non-raptor species include Rock Wren, Bushtit, Western Bluebird, Sandhill Crane, White-throated Swift, American White Pelican, and Dusky Grouse. Birders of any skill level are always welcome. Migration is most pronounced on winds with an easterly component. The hawk watch at Dinosaur Ridge is staffed by a Hawk Counter and volunteers from 9:30 AM to 5:30 PM from March 1st to May 14th, weather permitting.


From exit 259 on I-70 towards Morrison, drive south under the freeway and take a left into the first parking lot, the Stegosaurus lot. Follow the signs from the southwest end of the parking lot to the hawk watch site on top of the ridge. The hike starts heading east on an old two-track and quickly turns south onto a trail on the west side of the ridge. When the trail nears the top of the ridge, turn left, and walk to the flat area at the crest of the ridge. (Distance: 0.56 miles, Elevation gain: 259 feet)

Denver Field Ornithologists

Denver Field Ornithologists is an all-volunteer organization that conducts free field trips each year and welcomes participation and membership by all. Founded as the Colorado Bird Club in 1935, DFO promotes enjoyment of nature and the outdoors, and the preservation of birds and their habitats in greater Denver, Colorado and beyond. In addition to field trips, evening programs and birding workshops, DFO conducts citizen science by organizing spring and fall counts and supporting the annual Christmas bird count. DFO also awards grants to individuals and organizations conducting bird-related research, education, and conservation projects in Colorado. A 501(c)(3) nonprofit, DFO publishes a popular monthly newsletter and maintains a website and social media platforms (Facebook, Instagram) that extend our fellowship nationally and worldwide.

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.