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 ...

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 ...

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 ...

Spring-run fish are a variant of Chinook salmon, who return to rivers much earlier than the more abundant fall-run salmon. They return in the spring from the ocean to coastal freshwater rivers, ...