Rob asked -

> what goes "chewychewychewy-ch-ch-ch-ch-ch-ch", very fast, almost too fast
> for me to pronounce. Heard for the first time this morning. This is in a
> small clearing in cedar- fir- alder forest. Thanks for your help.

Habitat sounds typical of MacGillivray's Warbler. Also, there is a great deal
of variation in the songs among different individuals of this species; some of
the variations would fit the general pattern of your song. The ending of a
Nashville song is a rapid "trill", i.e. a series of notes of broad frequency
range delivered rapidly. The ending of a MacGillivray's Warbler's song is more
accurately termed a "repercussion" since it constitutes a rapidly repeated
series of more restricted frequency range. Thus, a trill is usually heard as a
clearer more musical sound, whereas a repercussion is more often heard as a
"thicker" sound such as the stammer of a White-breasted Nuthatch or the ending
ch-ch-ch of a MacGillivray's Warbler.

- Jack



Jack Bowling
Prince George, BC
jcbowling at mindlink.bc.ca