Historically, spring-run and fall-run Chinook salmon have been considered as separate subspecies, races, ecotypes, or even as separate species of fish. A new genetic analysis, however, shows that the ...

Typically, now is the time when creeks along the Sacramento River are filled with young spring-run Chinook salmon preparing to make their journey downstream to the Pacific Ocean, where they will ...

California biologists collect young spring-run Chinook salmon in Deer Creek, a tributary of the Sacramento River, on Oct. 10, 2023. (Peter Tira, California Department of Fish and Wildlife) The ...

Spawning season has begun for Feather River Hatchery’s threatened spring-run Chinook salmon, whose population is at a historic low.“What’s happening this year is the lowest number of spring-run fish ...

Spring-run Chinook salmon are also a preferred and primary food for Southern Resident orcas, which are themselves listed as endangered, having a population of only 73 individuals. Diminishing salmon ...