[EBB Sightings] Northern Shrike?

On the NorCal Birdbox this morning's transcript:

> Alameda Co.
> -----------
> On Jan 16, an adult NORTHERN SHRIKE and MERLIN were seen at
> Martin Luther King Jr Regional Shoreline in Alameda. The shrike
> was on the left hand isde of the entrance road, across from
> the end of the 1st pond. The merlin was also on the left
> hand side, just before the last parking lot. (Tracy Scwartz)

Has there been any resightings, confirmations, or more description of 
the bird? Is there any more knowledge of this sighting?

Les Chibana, Palo Alto