[EBB Sightings] No Big Raptor Migration at Crockett Hills This Yr.

All;

There was no concentrated raptor migration at Crockett Hills this Spring.
Have checked once each week or so since mid-March. My most recent visit was
yesterday. The number of raptors seen on all visits was 5-10 per hour, and
most of these were locals. 

The Crockett Hills EBRPD rangers confirm that they have seen lots of raptors
up there in the Spring for several years past, so will plan to check again
next Spring.

Have checked with Roger Hartwell who supervises the ranger team in the San
Pablo/Briones lakes watershed, which is WSW of Crockett Hills. He says they
have not seen any unusual raptor activity this Spring. So I rule out that
the migration shifted several miles west. 

I did only a casual check of the ridges east of Crockett, but I suspect that
EBB birders would have noticed large numbers of raptors there by now, as
they would have been passing the Mitchell Canyon area coming north. So am
fairly sure they did not shift to the east.

Northward raptor migration in the Spring is typically more dispersed than in
the Fall, so this all may not be unusual. 


Good Birding
Harv Wilson