Seen perched and in take-off from a large oak tree top. This location is quite near the riparian zone, where water is flowing vigorously today in this intermittent stream.
I noticed recently that the Black Phoebes have changed their call a little. Also they seem to be in closer proximity to each other. Possible mating behavior?
The Black Phoebe (Sayornis nigricans) is a passerine bird in the tyrant-flycatcher family. It breeds from southwest Oregon and California south through Central and South America. It occurs year-round throughout most of its range and migrates less than the other birds in its genus, though its northern populations are partially migratory. Six subspecies are commonly recognized, although two are occasionally combined as separate species, the White-winged Phoebe.