They also eat insects, rodents and other small birds ... Next, learn how to identify a little blue heron.

A comparison of the fast-growing fish-eating Baltic herring (Slåttersill in Swedish) and slow-growing plankton-eating spring- and autumn-spawning Baltic herring. Photo: Leif Andersson.

Intresting case of Punctuated Equilibria sub-speciation in the Atlantic herring. It colonized brakish and very recently fully formed Baltic sea (8 Ka BP). Planktivore turned in to piscivore with ...

Atlantic and Baltic herring are typical plankton-eating fish of central importance for the northern Atlantic Ocean and Baltic Sea ecosystems. A new study published in Nature Communications led by ...