Two birds of the Californian chaparral, the wrentit and the Bewick's wren, share the same habitat, and also have similar songs. But they manage to alternate their singing bouts so that they are ...

Vocal and plumage variation in the Bewick’s wren is extensive ... buzzier. Songs of birds in the interior subspecies-group (ero­moph­ilus group) are simpler than those from the far West ...

Sooty grouse are very vocal at this time of year but are found at mid-elevations requiring a trip up a logging road. Listen ...