Cooper's Hawks


Hook Mountain



interpretation                                                                                  about the trend lines

Cooper's Hawks have been steadily increasing since 1971 at Hook.

Interpretation (GRB):

A Successful Species:  The number of Cooper's Hawks counted at Hook has steadily increased since 1971.  Compared to an average of 130 per year for the 44 years since the Hook Watch began, the average for the last 10 years is 201.     During the last 10 years, however, our counts have dropped steadily.  While 2019 was a poor year for many of our hawk species, 2018 was a good year.  So, it appears that fewer of our Coopers Hawks are migrating through our region.  It will be interesting to see what the next 10 years will bring - will Cooper's Hawk numbers reached a plateau?

Cooper's Hawk Season at Hook
About the trend lines:

The trend lines have not been tested for significance. Their intent is to provide an overview of the general trend.   The graphs show two trend lines:  1971 - present, and the last 10 years.  The Hook Mountain Hawk Watch began in 1971, and the points with blue markers indicate the totals for all these years.  The points that show red squares around the blue markers represent the last ten years, showing the trend in this last decade.          more about trend lines . . . .
American Kestrel Merlin Peregrine Falcon
Broad-winged Hawk Red-tailed Hawk Red-shouldered Hawk
Northern Harrier Black Vulture Turkey Vulture
Sharp-shinned Hawk Cooper's Hawk Northern Goshawk
Osprey Bald Eagle Golden Eagle

HOOK Since 1971 FIRE NEHW Videos Bat's Bytes

Updated 08/29/2022, Trudy Battaly