Jv. being fed by wrens.
This is an hepatic phase (meaning tannish-orange rather than gray) juvenile female Common Cuckoo and was probably the rarest bird known to be in North America at this time.
Found across Eurasia, this Common Cuckoo likely flew down the wrong coast and instead of ending up in Japan or SE Asia, it showed up in central California. In just a few days, hundreds of people came to see it. While there have been a few records from the Aleutian Islands and one from mainland Alaska, this was only the second ever of this species in the lower 48. The last one was in New England in 1981.
It appeared to be eating good numbers of wooly-bear caterpillars.
Cuculus canorus (Linnaeus, 1758), Common Cuckoo, male, Utterslev Mose, Søborg, Denmark, 16 June 2015
The Common Cuckoo (Cuculus canorus) (formerly European Cuckoo) is a member of the cuckoo order of birds, Cuculiformes, which includes the roadrunners, the anis and the coucals.