Catherine:

Your Robin-like song can only be that of the 'ol "drunken robin", AKA the
Black-headed Grosbeak. These are remarkable songsters that seem to be
everywhere there's decent deciduous growth at this time of year.

They can have a remarkable number of variations from their usual song
series. I had one Fri eve near dusk near the intersection of 4th and Hwy 9
in Marysville doing a lot of short chortles and whistles reminiscent of a
Gr. Catbird.

Scott Atkinson
Lake Stevens
mail to: scottratkinson at hotmail.com