Jeff,

  You do not mention a fountain.  As soon as we added a fountain to our
backyard - everything

changed.  And especially so for those mid-sized birds such as Grosbeaks,
Waxwings, Towhees,

and even the Robins and Stellar's.  Our fountain is a 3.5 foot tall
"rectangular stone column"

sitting on a large water reservoir that is self-repleneshing.  We have
the pump on a Casa

switch that can be turned on/off or even programmed from my phone
(literally from anywhere

in the world).  The end result is that the bubbling (not spouting) water
is always there when

the birds are around (programmed for sunrise to sunset) - and it is rare
for there to be even

ten minutes without a bird on it.

  The birds may come-for-the-feeder but they return-for-the-water
...    *G*  - Jim