הזיהויים של agomperts

The Salinas River is nearby, as are other smaller tributaries.

Black Phoebe (Sayornis nigricans) is a perching bird in the tyrant-flycatcher family. Length is 17cm (6.5 inches). Adult male and femaIe (basically) look the same. It has predominantly black plumage, with a white belly and undertail coverts. The sexes are identical in color, and juveniles have brown feather tips and brown wing-bars. It is rarely found away from water, which may be natural streams or ponds, or irrigation ditches or even water troughs. Water ensures the availability of mud for nests.
They are very vocal little birds while hunting flying insects. Sound recordings below.

Audubon Guide to North American Birds https://www.audubon.org/field-guide/bird/black-phoebe

National Geographic Field Guide to the Birds of Western North America, ed. Jon L. Dunn, 7th ed., 2017, pp. 344-345.

Monterey Birds, Don Roberson, 2nd ed. 2002, sponsored by Monterey Peninsula Audubon Society, p. 318.

Sharing wildlife sounds from around the world https://xeno-canto.org/explore?query=Sayornis%20nigricans

E Bird https://ebird.org/explore and https://ebird.org/species/blkpho/

The Cornell Lab https://www.allaboutbirds.org/guide/ and https://www.allaboutbirds.org/guide/Black_Phoebe

Merlin Bird ID (great app available for Iphones) by The Cornell Lab (Bird ID help for 8,500+ species) https://merlin.allaboutbirds.org/

Found Feathers (Worldwide): https://www.fws.gov/lab/featheratlas/idtool.php