My wife Liza and I conducted our first Winter Raptor Survey (WRS) for the 
Hawk Migration Association of North America (HMANA) in Colorado after 
moving here 5 months ago from New York where I had had 3 different WRS 
survey routes that we completed 3 times in winter – every December, January 
and February since 2015. 

You can see our results, as well as if you’re interested in all the other 
WRSs conducted in the country. You can also see our results from New York 
where the two of us were responsible for 4 of the 5 yearly WRSs conducted 
in New York State:

https://wrs.hmana.org/public_html/index.php 

We saw a total of 93 raptors 2 days ago:

Red-tailed Hawk        17, including 1 beautiful dark-morph.

Ferruginous Hawk     11

Bald Eagle                   36

Northern Harrier        21

American Kestrel       6

Prairie Falcon              1

Rough-legged Hawk   1

We will be doing 2 more routes in the area around Boulder, Co before the 
end of December, as well as doing all 3 routes in January and February 2023.

Any raptor enthusiast can do a Winter Raptor Survey on their own. It is a 
volunteer program. You create your own route and follow it exactly the same 
way each time. 

If you’re interested in doing one, the best way to figure out where to 
create your route is to look at eBird data for the past 1-5 years for the 
location you are interested in – look up sightings for FH, RL, and GE – 
which will give you the likelihood you will see numbers of individuals of 
wintering species.

You can get general Information about the WRS program at 
https://www.hmana.org/winter-raptor-survey/ 

If anyone is interested in starting their own route and needs advice or 
help, please feel free to contact me. 

Ajit I Antony

Central Park, Colorado 

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