During the Eastern Alameda County CBC today, while scoping the fields and hills from the west end of Arroyo Las Positas (access at Springtown Blvd. near Rhododendron), Rich Nicholson and I had a Prairie Falcon on a fence post on a ridge to the west. A Golden Eagle was feeding on a fence post to the north. We had a particularly raptor-filled CBC which included 19 kestrels, a merlin, 19 Red-Tailed Hawks, a Cooper's Hawk, 3 harriers, 8 kites, and 6 Golden Eagles, 3 of them flying together over the field at Croak Road and Fallon.
Another highlight was a flock of more than 120 Long-Billed Curlews flying around and settling to forage in a field off Hartman Road, west of N. Livermore Ave.
We found Tricolored Blackbirds among the Red-Winged Blackbirds in a flock of hundreds at a cattle pasture about 2 miles up Doolan Road.
Say's Phoebes seemed to be everywhere; we saw 14 in all.