Welcome to CVWO's Raptor Research

Get updates from the Hawkwatch team at Kiptopeke State Park on the Eastern Shore in the blogs below. See the live and accumulated seasonal count in the interactive Dunkadoo report at the bottom of the page.

Raptor Research at Kiptopeke

In the opening aerial scene of this video, you can view the migratory route taken by 19 recorded species of raptors over the bottleneck of land that funnels the birds toward the Hawkwatch platform. There, CVWO biologists record information that is shared internationally with science data bases like HawkCount.org.

about raptor research

Why It's Important

CVWO conducts hawkwatches at Kiptopeke State Park on Virginia's Eastern Shore in the fall and at College Creek near Williamsburg during late winter and spring.

Since 1977, CVWO has conducted raptor research during fall migration at Kiptopeke State Park located on Virginia's Eastern Shore. Over this time, raptor populations have declined due to habitat loss and pesticides, as well as other factors. CVWO's research contributes to international data bases, scientific insight, and preservation of these magnificent birds of prey. 

In the opening aerial scene of the video above, you can view the migratory route taken by 14 recorded species of raptors over the bottleneck of land that funnels the birds toward the Hawkwatch platform. There, CVWO biologists record information that is shared internationally with science data bases like Hawkcount.org

A multi-authored scientific paper on the state of the world’s birds of prey and owls was published in September 2018 in Biological Conservation. According to the research, 18% percent of raptors are threatened with extinction and 52% of raptors have declining global populations. Scroll down to see this season's Hawkwatch data as it was recorded onto the new Dunkadoo technology from the platform at Kiptopeke. 



about the kiptopeke hawkwatch platform

What We Do There

The Kiptopeke fall Hawkwatch was established by volunteers in 1977, and has recorded nearly 900,000 hawks and vultures of 19 species.  Experienced Hawkwatchers are hired each year to conduct the Hawkwatch, from September 1- November 30, assisted by a corps of dedicated volunteers. Visitors are always welcome. Hawkwatches are an excellent way to monitor population trends and promote conservation. A majority of hawk species in North America are showing declining numbers. It is the one of the best places in the world to see migrating Merlins and Peregrines, with daily records of 462 and 364, respectively. The annual College Creek Spring Hawkwatch, on the shore of the James River near Williamsburg, was established in 1997 and records an average of nearly 2,000 hawks and vultures each year. To see hawkwatch data, click this link: www.Hawkcount.org

Pictured above and to the right are hawks seen from the Kiptopeke Hawkwatch and some of the long-term volunteers who assist our paid hawkwatcher.

Visitors are always welcome at Kiptopeke State Park to help us find birds and to learn about the amazing hawk migration. The hawkwatch operates daily, weather permitting, from September 1 through November.

Read about Hawkwatch in our newsroom here and our blog here.


CVWO Uses Dunkadoo Technology For Hawkwatch 2018

See Dunkadoo Data Below

Dunkadoo. It’s an unusual name. According to technology company's website, the Dunkadoo is an old New England term for the American Bittern and the name of a non-profit that has developed software tools for professional hawkcounters and other research scientists. The aim is to collect data, download, and share it using the global reach of the Internet, while saving valuable time for our hawkcounter at the end of a long day.  Using Dunkadoo our CVWO hawkcounter will enter data on a Galaxy tablet throughout the day which will automatically download to a customized web page on the Dunkadoo site. The data is used to create colorful charts, and graphs, which can be used for education and public outreach. The tool will also auto-submit the CVWO data to www.hawkcount.org. With this new tool CVWO can share our hawk watch data with a global community. We are excited to begin the fall hawk migration season with our returning hawkcounter, Anna Stunkel, and this great new tool! 


2019 Season Hawk Watch Summary

Kiptopeke 30 Year Fall Data

How to Read The Analysis from the Hawk Migration Association

To read the table at the top portion of the page, a green to red gradient allows for a

quick view of the highest count year (dark green) to the lowest (dark red). At the bottom of

the table, there are summary statistics that show the average values for each species over

the years. This is followed by how this year compares to an average year.

The pie charts located below the table shows the composition of the most common

hawks at your site for both the Fall of 2019 and then for the twenty-year average. All of the

scatter plots following the pie charts have five fine dashed lines. The middle-dashed line

shows the mean or average value. The dashed line above and below the mean line

represents one standard deviation, while the outside dashed lines represent an additional

standard deviation. One standard deviation represents 68% of the data in a normally

distributed system, while two standard deviations represents 95%.

The R2 value is the correlation coefficient and marks the goodness of fit for a linear

function. An R2 value of 1.0000 indicates a perfect fit of your data to a line, whereas an R2

value of 0.0000 shows that the data points are seemingly random and have no linear fit.

Download PDF

Kiptopeke data from 2000-2019


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