Short-eared Owl, December 2012 Photo © Bill Ralph

Short-eared Owl, December 2012
Photo © Bill Ralph

 

Since 2007, members of YAAS have been active participants in raptor surveys in the eastern Central Valley area covering parts of eastern Merced and Madera counties and western Mariposa County. We fondly dubbed these surveys “Raptor Runs”.

On a regular schedule, in accordance with defined survey protocols, we follow prescribed routes and count the number of raptors and note the location, species, and sex of each bird. These data are then provided to ornithologists who have published papers based on the results of the surveys done by YAAS as well as those of other groups and individuals participating in the program.

We have two routes: the Le Grand route which covers parts of eastern Merced and western Mariposa counties and a second route in the eastern Madera County foothills.

Participants are welcome but space is limited. We do the Le Grand route on the first and third Friday of each month, and the Madera route is run on the second and fourth Saturday.

 

Species Recorded by YAAS during Raptor Surveys
Note: the Loggerhead Shrike is included, although it is a songbird. For the purposes of the study, we consider it
an “honorary” raptor.
American Kestrel Great Horned Owl Red-shouldered Hawk
Bald Eagle Loggerhead Shrike Red-tailed Hawk
Barn Owl Merlin Sharp-shinned Hawk
Burrowing Owl Northern Harrier Short-eared Owl
Cooper’s Hawk Peregrine Falcon Swainson’s Hawk
Ferruginous Hawk Prairie Falcon Turkey Vulture
Golden Eagle Rough-legged Hawk White-tailed Kite

 

Bald Eagle (subadult), February 2016 Photo © Vern Johnson

Bald Eagle (subadult), February 2016
Photo © Vern Johnson

 

 

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